Start with one good interaction
Combos Team
A useful first prototype can be small: one action that feels good, a clear response, and a reason to try again.
Ask specific questions: is the target visible, does the response feel intentional, and can a new player understand the goal? Build a complete loop: see the goal → act → notice the result → try again.
Try touch input, a fresh load, a small screen, and returning from a background tab. Record observations, change one part at a time, and repeat. The preview checklist is a useful starting point.