The safest and most reliable way to play the full version is through official digital storefronts:
The game is an "evade-em-up" where you must navigate through the hazardous "Tomb of Doom." It emphasizes quick movement and survival over combat.
You can purchase and download the game directly from the Scoot Kaboom and the Tomb of Doom Steam Page. Scoot Kaboom and the Tomb of Doom on Steam