Nothing says “indie” quite like breaking down the walls of copyright and adding a bunch of characters from games you had no hand in making. And wouldn’t you know it, Gaijin Games is doing just that with their cardiovascular improvement simulator, BIT.TRIP Presents: Runner2: Future Legend of Rhythm Alien or "Runner 2" for those who need to work on their lung capacity.

Those who drop $3 for the “Good Friends Character Pack” will have access to Psychonauts’ Raz, Cave Story’s Quote, Machinarium’s Josef, Super Meat Boy’s Dr. Fetus, Portal 2’s Atlas (who’s Steam exclusive), Bit.Trip’s invisible Commander Video, and Spelunky's, er, Spelunky Guy.

We’re a little bummed that the DLC doesn’t offer new levels of some kind, but it’s hard to complain about anything when it’s a paltry $3, which, as developer Dant Rambo notes, is less than "a bag of hot dog chips." Still, here’s hoping we get some new levels to break in this new cast somewhere in the near future. In the meantime, why don't you watch these character introductions narrated by none other than Charles Martinet, aka, the voice of Mario. Yes, that Mario.

A Steam news note announces the arrival of an updated version of Valve's software development kit, which grants "support for Mac OS X and Linux to mod developers" and adds "the ability for virtual reality support in your mod." Yes, expect to see a wealth of Oculus Rift mods heading to a Source game near you. Ricochet with Oculus Rift support! The dream lives.

There have been other alterations, too. The source code is now up on github and a tweak to the license agreement allows users to share modified versions of the kit for free. If you're interested in making mods, the Valve Developer Community wiki is a good place to learn.

VR is the talk of the town at the moment, with the Rift's impressive showings at Eve Fanfest and E3. You can keep up with the latest VR news here.

Just as promised, Steam Trading Cards is now live. The virtual cards can be earned by playing participating games on Steam, trading with other users, or buying on the Steam Marketplace. Complete a set to create a badge, earn rewards and XP, and level up. The user with the highest Steam level at the end of the year gets to high five Gabe Newell while announcing Half-Life 3. In space.

In other true facts, I'm already hearing from users playing the Steam marketplace to profit off the cards' initial popularity. One user I spoke to has been buying low and selling high to pad his Steam wallet, even creating scarcity by buying up low-value cards in quantity. I'll keep an eye on marketplace prices as more users start trading the collectibles.

I was hoping to find a good deal on a 1952 Mickey Mantle card, but unfortunately, baseball isn't a participating game. You can see which of the games you own are participating here.

When Portal 2 was announced, the news dropped through an elaborate scavenger hunt puzzle that sent thousands of players crawling all over the internet. Years later, we finally get to see some of the work that went into making that alternate reality game, as told by celebrated Half-Life modder (now Valve employee) Adam Foster in a blog post at Gamasutra.

Foster, one of the designers of the ARG puzzle from Valve, describes the elaborate trail of puzzles that the Portal-playing community was able to decipher. It began with a seemingly mundane game update for Portal 1: “changed radio transmission frequency to comply with federal and state spectrum management regulations.” That update changed the radios found throughout Portal into Morse Code-dispensers. The code was deciphered into slow-scan television images. Somehow—my knowledge of information theory and cryptography ran dry a paragraph ago—these images were combined into an elaborate code, which was then hacked. Remember: none of us is as smart as all of us.



The result? A phone number to an ancient modem in Foster’s kitchen that slowly drip-fed Portal 2 concept art to announce the game to the world. The ARG team at Valve did a fun thing with no budget, and it caught the attention of the world’s games media. It was also an intricately designed puzzle that, despite a few false positives, played out exactly as Valve designed. As Foster writes, “Estimated time to 'solve' the initial puzzles: seven hours. Actual time to solve: seven hours and sixteen minutes. This wasn't an accident.”

We are all just puppets dancing on Gabe Newell’s strings, aren't we? Check out the full blog post from Foster for a lot of fascinating details about ARGs and the devious geniuses at Valve.

If you don't have beta participation turned on in your Steam settings, go do that so you can start collecting trading cards, earning XP, and leveling up. Yup, Steam just got gamified.

The games participating in the Trading Cards beta are Don't Starve, Dota 2, Counter-Strike: Global Offensive, Team Fortress 2, Portal 2, and Half-Life 2, and "up to half the card set" for each can be earned by playing them. The other half of each set is "earned through your collecting prowess," which presumably means trading with Steam users who got different drops.

Once you collect a complete set, you'll be able to craft a game badge which will appear on your profile and unlock "marketable items like emoticons, profile backgrounds, and coupons." Badges can be leveled up by collecting the required trading cards again, and all badges—including any you already have—now give you XP which contributes to your "Steam Level." Leveling up has its own benefits, awarding you "non-tradable items like profile showcases, extra friends list slots, and more."

Now that playing games on Steam is a game, are you bothered that someone out there is already beating you? If so, the PC Gamer Steam group may be a good place to start looking for trades.

Join the Steam Trading Cards group on Steam to score a beta invite so you can start collecting trading cards, earning XP, and leveling up—yup, Steam just got gamified.

The games participating in the Trading Cards beta are Don't Starve, Dota 2, Counter-Strike: Global Offensive, Team Fortress 2, Portal 2, and Half-Life 2, and up to half of the new virtual trading cards for each can be earned by playing them. The other half of each set is earned "through your collecting prowess," which presumably means trading with Steam users who got different drops.

Once you collect a complete set, you'll be able to craft a game badge which will appear on your profile and unlock "marketable items like emoticons, profile backgrounds, and coupons." Badges can be leveled up by collecting the required trading cards again, and all badges—including any you already have—now give you XP which contributes to your "Steam Level." Leveling up has its own benefits, awarding you "non-tradable items like profile showcases, extra friends list slots, and more."

Now that playing games on Steam is a game, are you bothered that someone out there is already beating you? If so, the PC Gamer Steam group may be a good place to start looking for trades.

There may come a day when preparing for the next chapter of a Left 4 Dead game will include wiping down your sweaty palms and taking a deep, deep breath. If you don’t, the zombies will get faster.

In remarks during the 2013 NeuroGaming Conference and Expo (via VentureBeat), Valve’s in-house experimental psychologist—Wait, hold on. Did you know that Valve employs an experimental psychologist? I wonder if he has lunch sometimes with the economist.

Anyway, Valve’s in-house mad scientist, Mike Ambinder, discussed experiments where players’ overall nervousness and agitation were measured, in part by recording sweatiness. If players began to show signs of nervousness or fear, the game would speed up. This new control scheme—mouse, keyboard, sweat-measuring skin pads—added another way for the player to interact with the game. Shoot zombie, reload pistols, keep calm. Signal for rescue, throw molotov, keep calm.

Ambinder also described other experiments in game design and biofeedback—which Valve has been talking about for a few years—including a version of Portal 2 that was played via eye tracking. Exploring the next generation of possible gaming inputs shows once again that Valve continues to operate, and plan, on a whole different level.

So good for you, Mike Ambinder. Just stay away from the mega-baboon hearts and everything will work out just fine.

There may come a day when preparing for the next chapter of a Left 4 Dead game will include wiping down your sweaty palms and taking a deep, deep breath. If you don’t, the zombies will get faster.

In remarks during the 2013 NeuroGaming Conference and Expo (via VentureBeat), Valve’s in-house experimental psychologist—Wait, hold on. Did you know that Valve employs an experimental psychologist? I wonder if he has lunch sometimes with the economist.

Anyway, Valve’s in-house mad scientist, Mike Ambinder, discussed experiments where players’ overall nervousness and agitation were measured, in part by recording sweatiness. If players began to show signs of nervousness or fear, the game would speed up. This new control scheme—mouse, keyboard, sweat-measuring skin pads—added another way for the player to interact with the game. Shoot zombie, reload pistols, keep calm. Signal for rescue, throw molotov, keep calm.

Ambinder also described other experiments in game design and biofeedback—which Valve has been talking about for a few years—including a version of Portal 2 that was played via eye tracking. Exploring the next generation of possible gaming inputs shows once again that Valve continues to operate, and plan, on a whole different level.

So good for you, Mike Ambinder. Just stay away from the mega-baboon hearts and everything will work out just fine.

Valve has thrown a bit more of its weight behind Linux with the release of beta builds of Portal and Left 4 Dead 2. If you own either (or both) games you should find that beta versions have materialised in your Steam library - along with Portal 2, according to some. The Linux build of the first-person puzzler has so far gone unheralded by Valve, but here's a blog post describing the latest beta version of Left 4 Dead 2. In addition to letting Linux users play Valve's zombie hit, the download acts as a "testing ground" for its new Extended Mutation System. Thankfully, you can try the beta on Windows and Mac too.

The beta version of Left 4 Dead 2 is the same size as the main game, so you have a hefty download ahead of you. (I assume the same is true of Portal.) Steam for Linux officially launched in February, so it hasn't taken too long to get Portal and L4D2 on there. Half-Life 2 next?

Thanks to BluesNews and Kotaku.

I haven't really played many community-made Portal 2 maps. Whenever I get the urge for more Portal, it's usually because I'm in the mood for the biting insults of GLaDoS, the goofy earnestness of Wheatley, or the brusque instructional tones of Cave Johnson, as opposed to simply wanting more puzzles. This week, though, I decided to finally see what the Portal community has been up to, and I managed to find a decent seven-part single-player campaign called Dilapidation, set in a damaged and deeply unstable corner of Aperture Science.

Dilapidation was created by modder LoneWolf2056, whose name suggests that he or she is either a lone wolf from the near future or perhaps the 2,056th lone wolf to join the Steam Community. The campaign takes place after Chell's latest escape from the Aperture labs, and begins with you, an unnamed tester, waking up next to what remains of your stasis cube in the Enrichment Center. Like a series mentioned last year on PC Gamer, Decay, the Enrichment Center of Dilapidation is busted, rusted, broken down and getting worse. It's filled with shattered walls, piles of rubble, overgrown plants, and even some birds that have gotten in through some missing ceiling tiles that provide a few tantalizing glimpses of sky.

The  Weighted Companion Cube, doing its best G-Man impression.

The puzzles of Dilapidation are mostly very large, generally made up a series of smaller interconnected test chambers that form one big puzzle requiring a number of coordinated steps to complete. There are no gel puzzles or turrets, but just about everything else from Portal 2 is used: laser beams and fields, buttons and switches, storage cubes and discouragement redirection cubes, light bridges and excursion funnels, and plenty of emancipation grids. There are also a few puzzles involving faith plates and a couple that require you to power up a circuit.

The elevators don't arrive on time. And don't stop in the right place.

It's not just puzzles that are on display: Dilapidation also has a fantastic sense of atmosphere. There are some great sequences between puzzles where the floors buckle, bridges collapse, and elevators malfunction, sending you tumbling deeper and deeper into the facility. These events aren't just for show, either. At one point a metal catwalk collapses, dropping you into a new test chamber, and the section of the metal walkway that plunges in with you winds up being part of the puzzle's solution. Crafty!

Cube holsters on the floor AND ceiling. I'm not getting out of here for a while.

The beginning of each new chapter picks up right where the last left off, making it feel like a complete game as opposed to just a series of maps with the same theme. The whole thing feels pretty expertly done and well-planned. Rather than just give players a challenge, it's clear the modder wanted to provide an entire experience, and I'd call it a success.

The more you burn, the faster the fan spins. What should I burn next?

With almost no dialogue (you get a bit in the final chapter, as Dilapidation closes with a genuine boss fight) you wouldn't think there would be a lot humor in this campaign. And, of course, there isn't. Still, I wound up laughing a few times due to the Weighted Companion Cube, which appears here and there throughout the maps, tantalizingly close but just out of reach. It actually becomes a running gag as you try to reunite with the box-shaped heart, but are constantly stymied by the crumbling architecture and faulty equipment.

Come on, door. I've got five out of six checks! That's a passing grade! Let me PASS

How hard are the puzzles? The creator describes them as medium/hard, which for me translates to hard/quite damn hard/this is very, very hard. On the other hand, I've never been particularly great at Portal's puzzles anyway, so I expect the average gamer will do a bit better. It took me about three hours, so it'll probably take you around two hours, except for the one guy in the comments who will inevitably claim to have beaten all of the maps in fifteen minutes without even using the portal gun.

Oh, look who's awake.

Installation: Steam Workshop makes it easy as pie cake. Just subscribe to the Dilapidation collection, start Portal 2, select Community Test Chambers, then select Play Singleplayer Chambers. All the maps (0 through 6) will be listed in your queue!