CS2D

Two teams face off on small maps seen from overhead, and the missions will feel familiar. You plant the bomb, guard the hostages, escort the VIP, or just kill everyone in deathmatch and team deathmatch. Rounds pay out for kills and objectives, so you spend that cash on pistols, shotguns, rifles, snipers, grenades and a tactical shield. You check a corner, the fog of war hides what you cannot see, then you trade bursts around a doorway. It is quick, scrappy and easy to read.

The arsenal runs past 70 items and gets strange fast. You can swing a machete, wrench or chainsaw, toss a molotov, gas grenade, flare or snowball, call an airstrike, lay anti-personnel and laser mines, or fire a flamethrower, laser, RPG and portal gun. Zombies mode turns it into survival: hold out as a survivor or join the horde and infest everyone else. Special armors help too, with medic and stealth options, plus medikits and bandages that heal on pickup.

Construction mode hands you walls, turrets, teleporters and dispensers, so you build a base, defend the flag and try to steal the enemy one. The built-in map editor makes new arenas in seconds with its entity and trigger system, and Lua scripting lets you change the rules or add mods with funny hats. Pixel graphics, dynamic lights and an optional top-down 3D look keep it light. It runs on very old machines, online, over LAN or offline against bots.