Is there a verified Clean the WORLD! tier list?

Not yet. The named milestones lack the roster, stats, roles, and version context required for exact rankings.

What can be compared today?

You can compare which milestones are official, current, or coming soon, and which player-facing fields remain unknown.

What would make rankings useful?

A current roster, effects or stats, repeatable criteria, and version context.

Are there known best team combinations?

No selected-game team data was collected, so this page does not invent combinations.

Checked 22 August 2026 · confidence: limited

Clean the WORLD! Tier List: What Can Be Ranked?

Above fold, the no exact rank answer is followed by milestone SEA evidence, held team intent, and objective ranking prerequisites. First screen says exact S/A/B rankings and best teams are not evidence-ready. The visible upgrade ranking readiness section, listing missing catalog, costs, effects, and tests required before any best-upgrade claim, shows why a roster and version context are still needed.

Official milestone

Cenozoic Era

Horse clue named; requirements, reward, and relative strength unknown.

Official milestone

Mythological Creatures

Name collected; roster, roles, and rank unknown.

Official milestone

Miocene Epoch Era

Gorilla clue named; no comparison data collected.

Official milestone

Mesozoic Era

Dinosaur clue named; no comparison data collected.

Current update

SEA

Named current update; no strength or reward comparison collected.

Coming soon

Outer Space

Not eligible for ranking.

Upgrade-ranking readiness

A visible upgrade-ranking readiness section lists the missing catalog, costs, effects, and tests required before any best-upgrade claim. Until then, the comparison stays limited to named milestones and current status.

Ranking criteria

A useful future list would compare clear speed, survivability, utility, unlock cost, team synergy, and replacement risk within one version. None of those inputs are complete enough here to label a best team, beginner pick, farming route, boss choice, or late-game winner.

Last updated: 22 August 2026. Latest adjustment: known status is shown separately from unknown mechanics and rewards.

Team combinations

No selected-game team composition data was collected. Use the cleanup calculator for a personal session plan instead of treating a same-name game's team build as applicable.