Sonic PICO PARK Worlds: 15 Worlds, WORLD CLEAR & Endless

Sources checked 2026-11-12 · Independent fan wiki · Single-sourced claims are marked inline

SONIC PICO PARK has 15 worlds — labeled WORLD 1 through WORLD 15 in the official Steam achievements — plus a WORLD CLEAR achievement for clearing all of them, and three ENDLESS SCROLLER score modes with targets of 1,000, 1,500 and 800. Those facts come straight from the official achievement list; a stage-by-stage walkthrough is not yet sourced, so this page is an overview of what is officially confirmed and nothing more.

What the official achievements confirm

The only official source that enumerates the game's structure is the Steam achievement list (mirrored by TrueAchievements for Xbox). From it, the confirmed shape of the game is:

• 15 worlds, each with a "Cleared all WORLD N levels" achievement.
• Levels inside each world — the descriptions say "all WORLD N levels", confirming worlds contain multiple levels, but never say how many.
• A WORLD CLEAR award for clearing all WORLDS.
• Three ENDLESS SCROLLER modes with score thresholds (covered below and in the Endless Scroller guide).

The 15 world-clear achievements

Each world's completion is measured by its own achievement. The percentages are global Steam unlock rates on launch day, 2026-11-12 — a snapshot, not a final number.

Note on WORLD 7: Steam names the achievement LARGE PARK while TrueAchievements' Xbox list calls the same world-clear BIG PARK — a platform naming difference, not a correction. Full list with descriptions and API IDs: achievements guide.

WORLD CLEAR and what "finished" means

WORLD CLEAR — "Cleared all WORLDS" — is the game's full-completion award, and it stood at 5.6% globally on launch day. Reaching it means clearing every level in all fifteen worlds. Officially, that is all the description says; no source in this snapshot describes any additional completion requirement beyond the worlds themselves (no collectible counts, no completion percentages are officially documented).

Why there is no stage-by-stage walkthrough here

The achievements name the worlds, not the stages. No official page, store listing or tracker in this site's research snapshot lists:

• individual stage names or stage counts per world,
• puzzle solutions or stage layouts,
• a recommended route or difficulty order.

Any such list would be invented. When official material or reliably sourced coverage publishes stage data, this page can grow a walkthrough; until then it stays an honest overview. See how to play for the goal-plate rules that every world shares.