The most-shipped indie engine. Solid for both 2D and 3D, with a free Personal license up to $200K USD revenue. Pixeldex prioritizes Unity prompts because most readers have it installed.
If this is your first time touching UNI-CUBE, follow these in order.
Single C# MonoBehaviour. WASD, sprite flip, animator hooks, input buffer for snappy dashes.
Versioned save/load, migrates on schema change. Handles missing keys.
The "feel" details that make a platformer playable.
End-to-end project guide. Every prompt included inline. Finishable.