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Best Onki Ou Apps & Games

250+ iOS apps & games curated and reviewed

4.6 avg rating
20 free apps & games
Updated August 2026

Block Maze Defense is the household name in onki ou, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Onki Ou Apps & Games (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Block Maze DefenseBlock Maze DefenseFree5.0★ (7)—NoAug 2026
2Jigsaw 3D PuzzleJigsaw 3D PuzzleFree——NoMay 2026
3RiichiCity - ACG mahjong gamesRiichiCity - ACG mahjong gamesFree4.6★ (606)NoYesSep 2026
4News for love story - Dating and relationship adviceNews for love story - Dating and relationship adviceFree—NoNoMay 2026
5競馬予想 JRA馬券で収支アップ競馬予想 JRA馬券で収支アップFree—YesNoMay 2026
6Eye'sTestEye'sTestFree—NoNoMay 2026
7日本語会話日本語会話Free—NoNoMay 2026
8競馬収支を管理 馬券で競馬の収支を計算する収支表アプリ競馬収支を管理 馬券で競馬の収支を計算する収支表アプリFree—YesYesSep 2026

Top Picks for Onki Ou

Block Maze Defense#1

Block Maze Defense by ONKI OU

Editor's Choice
🎮 Games
5.0(7 ratings)
FreeIn-App Purchases
Block Maze Defense screenshot 1
Block Maze Defense screenshot 2
Block Maze Defense screenshot 3
Block Maze Defense screenshot 4

Design the battlefield in real-time by placing Tetris-shaped blocks to create enemy paths. Each block placed extends the route, allowing built-in cannons to destroy incoming waves. Master spatial puzzles and strategic placement to defend your castle.

RiichiCity - ACG mahjong games#3

RiichiCity - ACG mahjong games by LANCELOT TECH LTD

Anime mahjong game with friend
Worth Considering
🎮 Games
4.6😐(606 ratings)
FreeIn-App Purchases
RiichiCity - ACG mahjong games screenshot 1
RiichiCity - ACG mahjong games screenshot 2
RiichiCity - ACG mahjong games screenshot 3
RiichiCity - ACG mahjong games screenshot 4
RiichiCity - ACG mahjong games screenshot 5

Experience a unique mahjong adventure with a special collaboration event. Engage in classic and creative game modes with a diverse cast of characters, featuring a star-studded voice cast and customizable rewards. Enjoy both traditional and unique mahjong challenges.

What We Love

  • 🚀 Best Japanese Mahjong/Riichi client
  • 👍 Generous and upgraded over Mahjong Soul
  • 👍 Smooth and intuitive UI/UX
  • 👍 Calming and welcoming atmosphere
  • 👍 Runs well on Steam and across devices

Room to Improve

  • 🐛 Lack of standard yellow tiles
  • 💰 Gacha system is too limited for F2P
  • 🤖 Unfair matchmaking and tile distribution
  • 🤔 Confusing tutorial and lack of explanations
  • 🔒 Strict auto-play detection and penalties

More Onki Ou apps to explore

FAQ about Onki Ou

What are the best onki ou apps & games for iPhone?
Block Maze Defense tops our onki ou apps & games ranking as of August 2026, with a 5.0-star average from 7 App Store ratings, and it's free to download.
Yes — 20 of the top onki ou apps & games we rank are free to download, including Block Maze Defense and Jigsaw 3D Puzzle.
Block Maze Defense has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ onki ou apps & games on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Block Maze Defense is a unique tower defense game where you create the battlefield by placing Tetris-shaped blocks. These blocks extend the enemy's path, giving your built-in cannons more time to attack.
You play by strategically placing Tetris-shaped blocks to create the longest and most effective path for incoming enemies. Each block also acts as a weapon, so positioning is key to maximizing firepower and defending your castle.