Portrait coming soon
Embercub
One of your three starter creatures.
R&D Worlds presents · Ages 7–11
A world of creatures, adventure, and maths-powered battles.
Create your Ranger. Choose a starter. Explore the wilds, build your team, and use what you learn to power every move.
Browser · iPhone · iPad · Public availability to be announced

How it works
Create your Ranger, meet Ranger Juniper and head into the Whispering Forest.
Encounter visible wild creatures and answer maths questions to power your moves.
Try a hint or worked explanation. A wrong answer still powers your move, with reduced strength.
After two victories, befriend a wild creature and grow your team.
Your first companions
Portrait coming soon
One of your three starter creatures.
Portrait coming soon
One of your three starter creatures.
Portrait coming soon
One of your three starter creatures.
Also meet Zapbee, Pebblit, Glimmoth, Thornwarden, Drizzlit, Bubblesnail, Reedwing throughout the wilds. Some creatures unlock grown forms through progression.
Discover the regions
Meet Ranger Juniper, encounter visible wild creatures and take on story challenges leading to the Forest Guardian.
Region artwork coming soon.
Continue the adventure by the river, discovering another region and more creatures to befriend.
Region artwork coming soon.
Crystal Caves and Sky Peaks are future areas, not completed playable regions.
Maths that grows with you
Five levels of adaptive practice.
Five levels of adaptive practice.
Five levels of adaptive practice.
Five levels of adaptive practice.
Hints, visual explanations, optional read-aloud and review of previously practised skills offer support along the way. An incorrect answer brings a worked explanation, and your move still happens at reduced power.
Maths is generated and checked in code, not by generative AI. Curriculum v9 tags are implemented but not independently teacher-validated.
Beyond the battles
Care for the creatures you've befriended and develop your team.
Practise times tables in your Ranger's Number Garden.
Earn experience and coins, gain Ranger levels, unlock rewards and customise your character.
Follow daily goals, fill your Adventure Book and earn maths badges.
The shop and expanded economy are planned, not yet built.
For parents
Questions adjust based on recent practice, with five levels within each topic.
Helpful explanations and supportive feedback make room to try again.
The current game does not use advertising or third-party analytics.
Adjust starting levels, focus topics and optional daily play limits.
Review the maths topics, attempts and accuracy recorded during gameplay.
Parent reporting reflects in-game practice, not independently verified learning outcomes.
No accounts, ads, tracking or network calls during gameplay. Local saves keep progress on the device, without cross-device syncing. Optional daily play limits, reduced-motion and accessibility settings put families in control.
Your next adventure