Originally known as Chain Shot!, SameGame (pronounced sah-meh-gah-meh) was created in 1985 by Kuniaki Moribe and has since appeared on devices as diverse as the Super Famicom, several Texas Instruments calculators and even home tv recording unit Tivo. Jussi Kari's Flash-based implementation plays very smoothly, and his stripped down aesthetic suits it well.
Like many great puzzle games, SameGame is as brilliant as it is simple. Each level begins as a rectangular grid of colored blocks. [Left clicking] any block that is adjacent to other blocks of the same color will cause them all to disappear. Blocks are affected by gravity and clearing an entire column will cause the blocks on the right to slide leftwards, filling in the empty space. Score points by eliminating as many blocks as you can, but you'll have to think ahead and beware; since the blocks are not replenished, a few wrong moves at the wrong time can leave you frustrated and stuck. Thankfully you start with 3 different types of bombs, used to clear a row, column, or 3x3 group of blocks. You begin with one of each and only get more by completely emptying all blocks from the level. The game ends when you forced (or choose!) to use the 'give up' button at the top of the screen.
The first level uses 3 different colors of blocks; each succeeding level adds another color. Clearing the board becomes very difficult, very fast. SameGame is not a stamina test in which you can measure your progess by level number, like most falling block games. Playing for points is more rewarding. Clearing large masses of blocks will net extra points, and each level has time and click based bonuses. Unfortunately, the high score list has been broken for quite some time.