MO vs ABYSS Deep Light
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
MO
Embark on a side-scrolling adventure in a dark, abandoned laboratory. Solve intricate puzzles and engage in strategic combat using unique abilities to uncover the truth behind a sinister environmental disaster. Experience a visually stunning pixel art world with an emotionally resonant soundtrack.
- Side-scrolling action-puzzler
- 360-degree gameplay
- Surface-sticking abilities
- Mind-reading and monster control
- Exquisite pixel art
- Emotionally moving soundtrack
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A side-scrolling, action-puzzler with "Very Positive" reviews on Steam. Come adventure and explore on the soon to be released mobile version. ▶Uncover the truth hidden in the sinister shadows of this ghastly environment Awakening inside a dark, humid, and abandoned laboratory, MO discovers that it not only has to face an extremely hostile and sinister environment, but also humans who, having been taken over by alien parasitic plants, are now stuck in an endless limbo between death and rebirth. Who caused this disaster? And on this path to solve the riddle of MO's existence, what sorts of trials and tribulations lie ahead? ▶Clear quests with intertwining puzzles using strategic battle skills 360 degree gameplay that combines action and puzzle-solving. Use MO's ability to stick on surfaces to get past tricky traps, read the minds of monsters, control them like a parasite, and dash past danger as you fly through the air. ▶Exceptionally unique environmental design MO has an exquisite pixel art that is both adorable yet dark, giving the game a full-bodied sci-fi atmosphere. Besides fitting the storyline perfectly, the amazing aesthetic effects are a constant visual feast for players as they adventure onward. ▶A soundtrack that is elegant and emotionally moving The game's theme song has been carefully crafted to express the story of MO's adventure, while the background music and sound effects for each quest fit perfectly with each environment. ▶Collaborating to create a moving masterpiece An exceptional masterpiece, developed by Archpray Inc. and produced by Rayark Inc.
ABYSS Deep Light
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ABYSS – Deep Light In total darkness, you are the last spark of light. Dive ever deeper into the abyss and bring the light back. STAND STILL TO SHINE Hold still and your submarine lights up, revealing the creatures of the deep and opening fire — but it drains your energy. Move, and you stay hidden in the dark and recharge. This rhythm of shining and hiding is the heart of ABYSS. OXYGEN IS YOUR CLOCK Your air runs out constantly. Collect bubbles and surface in time — running empty is deadly. THE DEEP PASSAGE Narrow rock shafts where currents pull at your boat. Steer through sluggish inertia, dodge the walls, gather light and air — and choose the right route. EVER DEEPER, EVER STRANGER Layer by layer the deep grows darker and more dangerous. New guardians awaken, new creatures lurk — until something ancient waits at the very bottom: the Source of the darkness. ONE REPAIR KIT You receive exactly one emergency rescue. Save it — use it too early and reaching the end becomes almost impossible. REPUTATION & RANK Every enemy raises your reputation; a forced surfacing lowers it. Rise from deckhand to a legend of the deep. THE SHIPYARD Trade salvage for permanent upgrades: armor, light, oxygen, propulsion. You will only reach the depths well equipped. FAIR BY DESIGN No pay-to-win. No ads. A premium game you beat with skill — not your wallet. German & English, always with subtitles.
Screenshots
Verdict
The clearest difference is price: ABYSS Deep Light at Free against MO's $4.99. MO's advantage is iOS requirement (12.0 vs 16.0). On update cadence, ads, in-app purchases and 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
ABYSS Deep Light is free to download; MO costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.
| Parameter | MO | ABYSS Deep Light |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.6 (47 ratings) — better | — |
| Positive reviews | 79.5% of reviews | — |
| Number of ratings | 47 — better | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 2.5 GB | 39 MB |
| Age rating | 12+ | 9+ |
| Developer | Rayark International Limited | Coolblack GmbH |
In-app purchases
MO
No in-app purchases
ABYSS Deep Light
No in-app purchases









