Dr. Plummet’s House of Flux

In _Dr. Plummet’s House of Flux_ the player has to man a small space ship to
reach Dr. Plummet, a mad genius whose inventions are needed to stop an
incoming alien invasion. The game has 28 levels (divided into four
difficulties) which are solved by saving seven stranded pilots which
previously failed the same mission.

The gameplay of this game is similar to Thrust: the most grave obstacle is
gravity which may change from level to level. It causes the ship to steer into
a certain direction and the player needs to counter steer so it does not ram
into the environment. The player can freely rotate the ship and use the thrust
to get a boost. The gun is used to destroy alien turrets which shoot at the
ship and are mostly stationed near the astronauts. The fuel reserve gets
drained when the thrust is used or if the shields have to fend off an enemy
shot – reaching zero causes the loss of a life.