What is the best way to make my enemy drop coins or diamonds after killing him ?
using particle system or spawn object ? what you suggest ?
Depending on what style of graphics/functionality you’re aiming for I’d say it depends (as Or Aviram suggests). If you want it to simply look pretty and add visual effects, then particle effects might be the best way to go. But if you wanted to attach scripts (which I think you do) to a coin, for example, then spawning an object (prefab) would probably be the way I’d suggest. And if you wanted to have both effects happen, don’t be afraid to try to make both!