There isn’t one single mod named exactly "transform button HUD hot," but these are the closest:
Better Transform Feedback (by MainMemory)
Custom HUD with Button Prompts
Anyone who grew up mashing buttons on a Genesis controller knows the pain. You are Sonic, you have the Lightning Shield, you are cruising through Carnival Night Zone. You have 50 rings. You try to perform a double jump to clear a pit, and suddenly—ding—you transform into Super Sonic. sonic 3 air mod transform button hud hot
The physics change. You lose your shield. You lose your rings. You are instantly locked into a button-mashing panic to detransform before you plummet into the abyss.
The Transform Button HUD mod eliminates this anxiety. By decoupling the transformation from the standard jump input and assigning it to a dedicated on-screen prompt (usually tied to a specific button press like Y or Triangle), it puts the player back in control. You only turn gold when you intend to turn gold.
This design choice solves two core problems. First, it eliminates input conflicts. In the original, the double-jump transform could accidentally trigger mid-platforming, wasting rings. The dedicated transform button, signaled clearly by the HUD, ensures that transformation is always intentional. There isn’t one single mod named exactly "transform
Second, it teaches without tutorials. A new player seeing a glowing icon next to their ring count will naturally press the unassigned button to see what happens. This is a masterclass in affordance—the HUD element “affords” pressing, just as a door handle affords pulling.
Prerequisites:
Step 1: Locate your Sonic 3 AIR Folder
Step 2: Access the Mods Directory
Inside the main AIR folder, open the mods subfolder. If it doesn’t exist, create it.
Step 3: Install the Mod
Copy the downloaded .airmod or (extracted) folder of “Transform Button HUD Hot” into .../Sonic3AIR/mods/.
Step 4: Activate in Launcher
Launch Sonic 3 AIR. Go to Options > Mod Manager. You should see “Transform Button HUD Hot” listed. Press the activation key (usually Enter on keyboard or A on gamepad) to enable it. Ensure it is checked and moved above other HUD-altering mods in priority. Better Transform Feedback (by MainMemory )
Step 5: Verify HUD Appearance Start any level with 50+ rings. The standard Sonic 3 AIR HUD (rings, time, score) should now have a small new icon – often a lightning bolt or a button silhouette with “TRANS” next to it. That’s the “Hot” HUD.