Blockster is a physics puzzle game inspired by the Super Stacker. You aim is to place every block from the queue in such a way they don't fall off the screen. You can use nails to fix blocks, but note, that nailed blocks can rotate around the nail. Levels of the second half of the game contain diamonds. You need to build a structure that touches every diamond on the level before you can complete the level.
Use mouse to place blocks on the stage. Ctrl+click creates an object and nails it. Shift+click creates a single nail, that allows fixing arbitrary objects. Press "Q" to skip the level. Press "[" and "]" to switch songs.