This is a very good game.
Zombies don't 'spawn' in.
All the zombies in the town spawn at the start. Zombies can't spawn inside the safe area you set up. Realistic, and also an issue a lot of games get wrong. This also makes it technically possible to kill ALL the zombies in the game - good luck with that though.
The isometric style works well for the genre.
The more 'old school' method of graphics actually enhances gameplay - especially if you are playing on a lower spec PC. You can have hundreds of zombies comming at you - and its not going to crash or lag. This simply cannot be accomplished realistically and effectively in a full 3d first person high-red format.
You aren't a super man.
You can't carry 6000 cubic feet of dirt, or wood, or potato chips. You are forced to make realistic decisions as you would in a real zombie apocalypse. Simply running through and clicking a 'loot all' button is not how this game functions. Also, don't expect to jump 6 feet into the air, or run 35 miles per hour either. You also have realistic amounts of ammunition, which has weight - so even a well-off survivor isn't going to be spamming bullets.
When you die, you're dead - or undead.
Regardless of if you like this or not - you can't deny: Things just got real.
Food can spoil. Planned sickness and and infection (non zombie) system with medical system to combat such issues. You can scavenge for food (bugs and berries). Fishing. Trapping. Hunting (Planned). Fatigue (Needs Tweaks). Mood system (Patrially implemented).
Its in the early stages of developement - and it already has a modding community thats doing some pretty good work - in fact, the developers are aware of this and support this, even working with a modder to incorporate their mod into the base game. Indie developing at its finest.
You can survive the end times with friends, or duke it out with them in the zombie apocolypse (Pvp needs tweaks, and those tweaks are planned)
Planned Singleplayer and multiplayer NPCs
High quality NPC's planned, with the same functionality and needs as players. They eat the same, they kill them same. etc.
You cannot rotate the camera.
You cannot and you won't ever be able to. It doesn't break the game in any way, but its a drag, we just have to deal with it.
Needs more hotkey options.
Item binding buttons for switching to various items while still moving. Craft X options. Cook X options. (Upon release I'd like to play with a group, and it will just be easier for the guys cooking and whatnot.) Quality of life improvements mostly. There should be a hotkey to drop bags in a pinch if you need to abandon weight and run. There isn't
Would like to see some minor automation.
Ex. You can build using wood at your feet currently, but if its a space over, you have to move it, or hold it to use it - all entered as separate commands. I would like a 'use nearby' option to be toggleable, for example. If I tell a guy to build a wall, I would like for him to walk (or run if toggled) back and forth to the wood pile and wall and build the wall/ floor, etc. if its reasonably close. It should also be toggleable to prevent this if unwanted. I would also like to see this with the cook or craft X options. Streamlining repetitive menial tasks improves the experience.
Realism. and Lategame Tweaks.
The realism is good, but with realism comes even more expectations. I would like to see food preservation options. I would like to see societal rebuilding in the lategame (especially with NPCs) However due to the lategame currently being somewhat easy, I suggest that new challenges are thrown into the mix. Horde Migrations (Planned). Bandit/ Raider group - From another town? Vehicles and weapons to combat you with - that you can get if you win perhaps? Restore power (In minor ways). Restore running water (Partially). The idea is that eventually you must die, but farming made it possible to live indefinitely. I think surviving forever should be possible - but should be made difficult. Dudes attacking with machine guns and zombie hordes will always be a real threat.
Lots of planned features. Good features, but features that take time, and as the indie market and development process is a somewhat new phenomenon, and it goes against the modern world's fast-life culture, it can be difficult at times. Movable funiture, Portable Storage (Wheelie bins, Wheelbarrows), Vehicles. NPC's. NPC's. . . . . NPC's. All things we're waiting for.
There are various things that don't quite work that well yet, and need to be solved, like sleep/no sleep options in multiplayer - as well as how some moodles function (moodles are buffs/debuffs/warnings that describe various status effects on your character) - but the game is early release, so it gets a pass on those things for the time being.
The map is huge, but there is no 'random' map - and your map options are limited.
The only map options are what region/town on the map in which you spawn. The base map is fantastic, and features a good mix of environments, and they do continually expand the map. (If map expansion continues - especially beyond release - then one map only will make a lot more sense and this will go into the 'pro' category - Especially if the map becomes ALL of kentucky like some rumors have suggested) [Even if its DLC, or if modders have to do this - DO IT. lol] - More maps are being made by modders as well.
You can tweak zombies to be whatever kind of lore you want - Fast, strong, mutant freaks - Slow, shambling, traditional corpses? - Its all up to you. Weather options. Utility shut down times. Day lengths in real time. Availibility of loot. Loot respawn options (mostly for servers).
However, since there is a 'survival mode' already, I would like to see sandbox expanded more. Maybe you DO want to be a crazy madman who can run faster, or maybe you want a headstart of skills, maybe you wan't skills to progress and train faster. Maybe you want to start with some sort of gear loadout. These things don't fit with the spirit of the game as much, but they should be options in the sandbox. This will appeal more to the 'hardcore' crowd by allowing them to test things in a sandbox environment (Like how fast am I with athletic and lvl 5 running?) - Or maybe you want to play where your guy is fast, AND the zombies are fast - like some sort of human enhancing drug worked on some like you, but causes ill effects in others - making them crazy I Am Legend monsters. It will also appeal to casual gamers by allowing them to nerf harder aspects of them game.
In short, Sandbox has a good amount of options, but I'd like to see more - primarily the ability to set starting trait and skill points. Sandbox is about freedom.