After getting almost everything in the game's main mode I have to say this one is pretty fun. There was one I had trouble with because I kept getting killed since my base was at low health but managed to get through it and got myself better equipment which made things easier. You fight zombies and monsters. The different zombies and monsters are different colors meaning they can go fast, have more health, or both. You get a few different weapon types. Pistols, magnums, submachineguns, rifles, shotguns, auto shotguns, light machineguns, miniguns, and laser cannons. You can buy power-ups that give you extra damage to your guns, more speed to reload, make you move faster, give you more exp when you kill enemies, give you 1 exp for each zombie you shoot, more magazine size, more health to you and your base, and increase to your maximum health, and base. You do get exp which is currency in this game to use on different things on your base. There are other game modes but I have no mood to play them. Pretty good game I give this a 9 out of 10.

Pretty fun game.

love this game! was one of my favorite games a kid. my main and only complaint is that it's not fullscreen on the newsground player, it only appears as a tiny window fullscreened

Wait a second... I know you!
its crimsonland?

Jesus, I forgot this game. Great stuff.