Sorry for generic title. I’ll just cut to the chase,
-Expansion packs / DLC
Could be made after your game’s initial release to increase profits.
-Compilation / collection games
A compilation/collection of a few previous small games, all included into one for a re-release. You could select which ones to include.
-Porting
Porting previous games on to new consoles after they’re released.
-Merchandise
A bit self-explanatory. Sell merchandise of your game / company.
-Remakes
Maybe if you made a best-selling game a long time ago, you could remake it? But I guess it would be more for fans than actual profit.
And that’s all I got. I’d love to hear your own suggestions, or maybe some flaws with mine? I kinda new to… Well, forums in general. I just thought I’d check out Greenheart Games’ and give my two cents.