I like games which require the use of strategy to win. Here are some free strategy games from various sources which you can play online. Some Logic Puzzles are also available.
|Gemcraft||Gemcraft Chapter 0||GemCraft Labyrinth|
|Warfare 1917||Warfare 1944|
|Battalion Nemesis||Battalion Skirmish||Battalion Ghosts||Battalion Vengeance|
| Creeper World
|Creeper World 2