Our Games

Bite-sized worlds designed with tactile feedback, gentle mechanics, and genuine heart.

Nimbus: The Cloud Keeper official app icon
Phase 01: Daytime Arcade

The 60-90s Shower

One-thumb portrait steering. Rest Nimbus over a thirsty plant to rain on it, refill the tank at the lake, and keep the laundry and the picnic dry.

Phase 02: Sunset Builder

Cozy Village Growth

Between arcade days, spend the drops you earned on houses, orchards, windmills, a fountain, and a market. Villagers move in and place orders.

Phase 03: Ecosystem

Feline Companions

As flowers flourish and ponds fill, wandering island cats and gentle wildlife make your village their peaceful sanctuary.

KNOT: Draw the Loop official app icon

Draw, Close, Catch

Drag anywhere to steer the Needle. Bring the thread back to a pin and everything inside the loop is yours.

Greed Has a Price

The thread is limited, scissors cut it and mines burst your loop. The bigger the loop, the bigger the score and the risk.

A New Knot Every Day

Endless mode, a Daily Knot that is the same for everyone, fourteen challenges, seven powers and thirty skins to collect.

Me, Again: Time Loop Puzzles official app icon

Draw, Rewind, Repeat

Trace a route with one finger. Each run lasts five seconds, then time rewinds and you draw again.

Team Up With Yourself

Keep a past self to hold a pressure plate, open a barrier or power a relay while you head for EXIT.

Sixty Rooms, Six Worlds

The first twenty rooms are free, and an optional one-time purchase unlocks the other forty. Come back for a daily practice puzzle.

In The Workshop

Prototypes and upcoming concepts currently being explored at Mastalos Games.

In Prototyping

Project: Zephyr (Working Title)

A tactile exploration of kinetic wind currents, spinning pinwheels, and acoustic bell chimes. An experimental physics toy designed for calming micro-breaks.

Platform: Mobile • Status: Paper Prototyping
Ideation

Project: Sprout Haven

A serene pocket terrarium game investigating tactile seed propagation, miniature ecosystem balance, and slow seasonal transitions.

Platform: iOS • Status: Concept Exploration