The Ancients' Tome
The Ancients' Tome is a Game Maker game, where you need to protect a flying tome from harm. In addition to keeping it in the air, you also need to defend it against enemies.
The game is played using the keypad (or left-hand equivalent). Pressing a key on the keypad corresponds with a button on screen or on the tomb.
To perform an action, you need to press icons on the tome in a specific combination. Valid combinations are introduced slowly, with new combinations being added as the game progresses. The first one involves thrust, where you need to keep the tome from crashing against the ground.
All valid combinations are shown to the right, but to complete the given level, you only need the ones you've been introduced to.