
Sonic Adventure Blast is a fan-made game designed to evoke the fast-paced movement of Sonic Adventure and Sonic Adventure 2, while introducing new elements and modifications to create a fresh and original experience. The game features 22 distinct levels, including a boss battle, and offers 60 unique missions to earn A ranks. Hidden NPCs are scattered throughout the levels, and collecting them or achieving high scores unlocks special character skins. Many levels are inspired by Sonic Adventure and Sonic Adventure 2, but the game also includes stages from other titles. Delfino Plaza and Noki Bay have been transformed into treasure hunt stages where Knuckles searches for randomly placed emerald fragments. In Kingdom Valley, you take control of Tails, using his flight ability to navigate the level's many cliffs and structures. There are four mission types: Normal Mode, Ring Attack, Lost Chao, and Hard Mode. In Ring Attack, players must collect a specific number of rings, which varies by level. Lost Chao missions require finding a hidden Chao within the level. Hard Mode is used in treasure hunt stages, where the pieces are fixed in place but no radar is available, so attention to detail is key.

| Audio | Subtitles | Interface | |
|---|---|---|---|
| English (US) | ✓ |