OCO vs Slime Spectrum
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
OCO
Engage in a captivating one-touch puzzle-platformer with over 7000 levels. Master simple controls to navigate challenging environments, create your own levels, and enjoy a unique audio-visual experience. Compete in daily challenges and strive for perfect solutions.
- Simple one-touch controls
- Over 7000 challenging puzzles
- Level editor and sharing system
- Daily challenges
- Minimalist design
- Procedurally-generated soundtrack
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“OCO is an exceptionally clever one-touch puzzle-platformer” 8/10 Pocket Gamer “Gloriously addictive and intelligent puzzles” 8/10 Touch Arcade Immerse yourself in the beautiful audio-visual world of OCO Use simple one-touch controls to launch, rush, crash, glide, warp, and hang as you solve over 7000 fast-paced platforming puzzles FEATURES • Simple one-touch controls • Complex challenging puzzles • Precision platforming • 7000 hand-selected player-created levels • Create and share levels using OCO jpg levels system • Beautiful minimal design • Procedurally-generated soundtrack for every level • Built-in editor • Daily challenges • 'Discord' community • ‘Perfect solution’ challenges for all levels • 46 achievements AWARDS • Finalist 'Pocket Gamer People’s Choice Award', 2020 • Runner-up ‘Big Indie Pitch’, Develop, Brighton, 2018 • Finalist ‘Very Big Indie Pitch’ Pocket Gamer Connects, London, 2017
Slime Spectrum
Navigate challenging levels by changing your slime's color to match gates. Dodge traps and rising ink in this fast-paced puzzle game that tests reflexes, timing, and strategy.
- Color-changing slime
- Match gates to progress
- Dodge deadly traps
- Escape rising ink
- 50 unique levels
- Fast-paced action
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Dodge deadly traps, outsmart turrets, and escape rising ink in Slime Spectrum! Change your slime’s colour to pass through matching gates and master 50 unique levels of fast-paced, puzzle-filled action. Reflexes, timing, and strategy are the key to taking your slime to victory!
Screenshots
Verdict
The clearest difference is in-app purchases: Slime Spectrum at none against OCO's 8. Slime Spectrum also leads on ads (none vs shown) and update cadence (daily vs every 5 weeks). On price, device support and iOS requirement 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
Both are free to download. OCO sells 8 one-off in-app purchases. Slime Spectrum asks for nothing beyond the download.
OCO ships an update every 5 weeks, Slime Spectrum daily. The most recent releases landed on September 30, 2026 and September 21, 2026 respectively.
| Parameter | OCO | Slime Spectrum |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) — better | — |
| Positive reviews | 73.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.4K — better | — |
| Update frequency | Every 5 weeks | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 113 MB | 201 MB |
| Age rating | 4+ | 4+ |
| Developer | SPECTRUM48 LIMITED | BattleRam Studios |
Customer experience
OCO
Slime Spectrum
Bugs and requests
OCO
Reported bugs
4 issues- Game crashes on startup after updates
- Slow mode issue prevents level uploads
- Levels sometimes can't be opened
- Losing progress/data after updates
Requested features
5 requests- Add different beat/music options
- Allow liking levels without completing them
- Improve level saving/loading
- Add more block types (traps, flippers, etc.)
- Bring back online features
Slime Spectrum
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OCO
- NO ADSFree
- x 2000 bits$0.99
- x 5000 bits$0.99
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- Remove ads$1.99
- x 8000 bits$2.99
- OCO pro$2.99
- x 30000 bits$4.99
- x 100000 bits$9.99
Slime Spectrum
No in-app purchases
