The listing, Ultratron [Steam Key] has ended.
Experience the addictive gameplay of old-school arcade favourites, updated and improved for the 21st century!
Unique retro-futuristic sound and graphics, player responsive difficulty, and a subtle system of tactics combined with classic gameplay make Ultratron a fun and hypnotic arcade blast.
The last human has been slain by evil killer robots. You are the one remaining humanoid battle droid. Your mission: avenge the human race! Boost your battledroid with powerups, buy cute but deadly pets in the shop. Blast your way through 40+ glowing neon levels, avoiding Chasers, Turrets, Spawners, Minelayers, bombs, and bullets, and take on the four giant boss 'bots of the Apocalypse - Ieiunitas, Bellum, Lues and Letum!
More info: http://store.steampowered.com/app/219190/
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This game works on mac and linux too! Also includes steam trading cards
Good Luck!