4BlockSim

Contains ads
Content rating
Everyone
100+
Downloads
Content rating
Everyone
Learn more
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About this game

An unofficial simulator for practicing Tetris.
Recommended for those who want to calmly practice opening templates and rotation inserts.

Major features
- No free fall
- Supports rotation insertion
- Undo/Redo function (one move back, one move forward)
- Opening template registration & guide display function (reverse display possible)
Updated on
May 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

What’s new

- 新機能「ランダム地形生成」を追加しました。右上の三点リーダーメニューからお使いいただけます。
- (要はお邪魔ブロックのせり上がりです。堀り REN の練習とかにお使いください)
- テンプレートを現在のフィールドに上書きする「地形の生成」メニューを「地形の展開」に改名しました。