Retroworks have released the complete source code of their shooter Genesis: Dawn of a new day. With that, they provide a valuable source of information to (novice) MSX developers.

A bit longer ago, an updated version of the game was released as well. In this version, Retroworks have changed the way enemies move, to ensure that those enemies scrolling at the same speed as the background. This way, turrets and power-ups are in perfect sync with the background movement. In the initial release there was a 1 frame delay, which was noticeable for some people.

Relevant link: Genesis: Dawn of a new day