Escape the O vs ISUD Zero
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Escape the O
Navigate a playful maze, outsmarting "the O" by reaching the exit before it catches you. This puzzle game offers daily challenges and hundreds of mazes in various sizes, with optional hints.
- Outsmart "the O" AI
- Daily competitive mazes
- Hundreds of available mazes
- Multiple maze sizes
- Hint system
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Escape the O is a puzzle maze game inspired by the classic Minotaur in the Labyrinth challenge — but with a playful twist. Instead of a monster, you’re trying to outsmart Otte (“the O”), navigating through the maze to reach the exit. For every one move you make towards the exit, O gets to move twice. However, O will only move if it reduces his distance to you and will always move sideways first. Key Features: - Daily maze for you to compete against your friends - Hundreds of mazes available - 4 Maze Sizes: 9x9, 11x11, 13x13, 15x15 Hints are available, but do you need them?
ISUD Zero
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Dodge readable bullet patterns, graze for Phase Pulse, and chase clean weekly scores against the Pattern Engine. Description: I.S.U.D. Zero is a portrait bullet-hell boss rush built around clean reads, a tiny fair hitbox, and fast retry mastery. Enter the simulation chamber, learn each boss pattern, graze close calls to charge Phase Pulse, and chase cleaner clears across The Instructor, Mirror Cadet, Twin Array, and The Cartographer. Every run is short, sharp, and score-driven. Bosses move, mutate, and escalate through multiple phases. The ship only takes damage at the red core, so the chaos stays readable even when the screen blooms with bullets. Features: - Precision drag controls for portrait play - Fair red-core hitbox with optional callout - Graze scoring and Phase Pulse screen clears - Four multi-phase bosses with distinct patterns and visual escalation - Five additional boss slots marked Coming Soon - Difficulty options, persistent best scores, and ranks - Game Center weekly and all-time high score leaderboards - Neon arcade presentation with original audio hooks
Screenshots
Verdict
The clearest difference is price: Escape the O at Free against ISUD Zero's $0.99. ISUD Zero's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Escape the O is free to download; ISUD Zero costs $0.99 up front. Escape the O sells 6 one-off in-app purchases. ISUD Zero asks for nothing beyond the download.
| Parameter | Escape the O | ISUD Zero |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 113 MB | 119 MB |
| Age rating | 12+ | 12+ |
| Developer | Nathaniel Van Evera | Suwitcha Sugthana |
In-app purchases
Escape the O
- Small Hint Pack$0.99
- Tea for the Dev$0.99
- Medium Hint Pack$1.49
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- Large Hint Pack$1.99
- Buy Mr. O a Treat$1.99
- Extra Large Hint Pack$4.99
ISUD Zero
No in-app purchases









