Spelunky, an Xbox Live Arcade revamp of a free PC indie game, straddles the line between insurmountable addiction and a precise extractor of self-hatred. Like other rare indie gems, such as Metanet's N series, Spelunky is equal parts diabolical and ingenious.
The concept is simple: explore worlds filled with treacherous obstacles while collecting treasures and attempting to survive. You start the game with a standard whip along with a few climbing ropes and bombs, which are used to carve out a path to the level's exit. Each randomly generated level is filled with traps, enemies, and environmental disasters awaiting your unnamed adventurer. Survival may be the primary goal, but Spelunky's secondary objective is to make players regret the follies of poor split-second decisions.
It's the kind of experience you hate yourself for loving, but love it you shall.