These modders have game design down to a SCIENCE!!
Now that I got my funny out of the way, lemme be serious. No humour further on if you're looking for that, so stop reading.
I literally mean they have the game to a science. Imagine game design as a checklist: They did it... But this game, is suffering from what all modern games are suffering from: Lack of Fine tuning.
Oh yeah, I should get this out of the way: I am going to refer to this as a game, not mod. This is because, not only I payed money for it and now have high standards, but because it felt like something new, something different.
Since they completed the checklist, this game has what is required of them: It was fun, it was clever, it was unique. Gameplay-wise, it couldn't have been better!
But there are so many flaws that I could never get over: They bugged me from the moment I started playing to the moment I finished the game. I'm going to start with the characters: Nigel. I'm comparing Aperture Tag to Portal 2, so in terms of character development, the modding team for this game should have had higher standards. Nigel doesn't have a bad voice or character necessarily, he feels generic.
In Portal 2, it's obvious what each kind of character is: Adventure Core is an action-addict, Wheatley thinks he's clever, tries, but fails, Space Core has a childlike optimism, and the Fact Core is a dictionary that's occasionally full of himself. And GLaDOS... We all know who GLaDOS is. Each persolity is PERFECT.
Nigel seems so generic that it's hard to tell who he is, and the biggest factor is the voice: Just by listening to them, you can tell who each character is. The other characters stood out, I can quote off the top of my head something from each of them because their voice matched their character and stick out. All I know is that Nigel said a few things that make me chuckle. That's all I know from his character. Nothing about him stood out. Not a bad voice, not a bad character... But if he's going to be the Jiminy Cricket in my pocket, he needs to be special, unique, not generic.
Another thing that bugged me is the paint gun. Graphically, it's nice, the jigglebones inside the glass bits could've been better, especially should've reacted to gravity, maybe even copied from Team Fortress 2 liquids.
The biggest problem with it is that it had almost no animations. Portal 2, doing anything had an animation. Pressing E whenever there's nothing there jiggled the gun, firing portals made it react. The paint gun sits there, lifeless, almost unnecessary, especially since the paint comes from the middle of your face in the first person... That's a bit weird, I want paint to come from my gun, not my face.
Oh, and back on Nigel. His eye was reused from the fact core, just recoloured. Come on, guys! Even people in the Garry's Mod community know that's A VERY BAD THING. Even the shade of orange looks like the Space Core!
Penultimately, I feel like they reused a few too many resource from Portal 2 in the earlier levels. Now this isn't too big of a problem... Except that they have competition with "Thinking with Time Machine", which had custom visuals from the get-go! It felt like something new! Aperture Tag, on the other hand, reused resources when they had a chance to make new resources. Now I understand cannonically, that it would be difficult to make new resources... And in the later levels, it wasn't an ussue at all with the themed artificial nature, that was BRILLIANT!! But still, just a texture swap would've been nice.
The antique turrets were awesome.
Also, being able to load your saves would be cool too. Especially if you get stuck someplace impossible: http://steamcommunity.com/sharedfiles/filedetails/?id=392163421
Come on, guys.
This moves me onto last thing: Gameplay. So we all have that need to cover everything in paint, right? Turns out, a few times made me regret it. I'll splot blue paint throughout the entire room, but regret it because the cube won't stop bouncing. This particular level won't have orange paint, so I'll have to deal with it. They need to implement water whenever an alternative paint is out of use.
Anyway, this game is worth your time if you like fun... But there will always be one thing to slightly bother you. ALWAYS.
Hey, creators of this mod! Now make it so that you can play the Portal 2 levels with it! And Hydra support! And co-op in the campaign! Somehow! NOTICE ME.