Instance Destroy is a bite sized metroidvania (Around 5 - 7 hours).

Why play this one?

In depth combat with the ability to juggle and toss around enemies.

Find furniture to decorate your room / upgrade your character.

Create elemental weapons.
Using elemental weapons too much changes the levels. (Using an ice knife causes snow and ice to fill the level and augment the enemies)
Having different elements active will allow you to take different paths through the levels.

Try mixing and matching elements to create unique weapon effects.