Quick answer: It depends on your platform, controller support is essential for console, Steam Deck, and many PC players, but may be optional for mouse-only or touch-only games.
Controller support broadens how players can play, but its necessity depends on your game. Here is whether you need controller support.
When You Need It: Console, Steam Deck, and PC Players
You need controller support for console (required), the Steam Deck (controller-first), and the many PC players who prefer or need controllers. For these platforms and players, controller support is essential, omitting it excludes players and risks negative reviews.
Bugnet captures the crashes and issues controller handling triggers, so when you add controller support, you can see the controller-specific problems players hit and fix them.
When It's Optional: Mouse-Only or Touch-Only Games
Controller support may be optional for games designed around mouse-and-keyboard (some strategy or precision games) or touch-only mobile games, where a controller does not fit the design. But even these sometimes benefit from controller support for accessibility or platform reach (the Steam Deck).
Bugnet helps you decide and verify by capturing how players actually play and where they hit issues, so you can gauge whether controller support is needed and ensure it works if you add it.
When You Add It: Test With Real Controllers
When you do add controller support, test with real controllers across types, since controllers vary (brands, layouts, connection methods) and controller bugs (wrong mappings, unresponsive input, crashes) ship if untested. Support remapping too, for comfort and accessibility.
Bugnet captures the crashes and issues controller handling triggers across devices, so the controller problems on controllers you did not test become visible, letting you fix the controller bugs your testing missed.
It depends on your platform, controller support is essential for console, Steam Deck, and many PC players, but may be optional for mouse-only or touch-only games. When you add it, test with real controllers.