Bored? Like Adventure Time? Try playing one of these many, many Adventure Time games.
Cursors is a fascinating maze game where you have to cooperate with others with very limited ways of communicating.
In Lexicopolis, buildings are constructed from the letters that make them up. Construct buildings by typing words like "HOUSE," "OFFICE," or "PARK."
"I discovered Cookie Monster and the Cheat interface bookmarklets. What harm could it do? They're just local bits of java. No harm, no foul. So I got greedy... I couldn't have enough cookies. Let the cookies run, I thought. Nobody uses my desk when I'm not here..." From Reddit user LivingDeadSquirrel.
So you can get 4096 in 2048, and you're an old hand at Flappy Bird, but can you beat... Flappy48? (requires unity)
For about three years, the A.V. Club ran Sawbuck Gamer, a regular column reviewing the week's most notable free and cheap games across all platforms, from web games to handhelds to console downloadables. It's a treasure trove of content, especially since more literary sister site The Gameological Society took the helm, and it's publicized great desktop projects like the luscious platformer Frogatto (previously), feature-rich Super Mario Bros. X (previously), the evocative faux-web Digital: A Love Story (previously), interactive fiction gem Rover's Day Off, and the hyperkinetic RunMan: Race Around the World (previously). But if you're in the mood for something more immediate, why not start with a list of all the original column's free A-rated online titles? [more inside]
Tired of tower defense games? Tired of always playing the good guy? Try playing Villainous, a tower conquest flash game.
Minecraft (previously discussed here) is a building game being developed by Notch. The developer (singular - it's mostly a one man show) has been busy since the last time the game was posted. Before, the focus was mainly creative, cooperative building. The recent direction the game has taken is a sprawling, single player survival game, where the player must harvest resources to build defenses against a hostile world. [more inside]
The downward spiral that is Evony, a web based multi-player game, advertising. Also: The Best Worst Ads by 1UP and fake in-game ads by Something Awful.
Reset Generation : made by the makers of Trials 2, it's a web and mobile game that mixes advance wars and puzzle games. Rescue the Princess! Fire your Cannon! Beat your enemies! [more inside]
Get Hostile! - Inspired by the well-beloved Avalon Hill board game Acquire, Get Hostile! is a free, web-based board game that has already sucked up hours of my time. Check out the quick tutorial to get up to speed, then play against live opponents or AI's, forming corporations, buying stock, and doing hostile takeovers!