Erwin vs Block'n'Roll

Erwin is a sliding puzzle played on the six faces of a cube, a unique 3D experience with spatial audio and holographic depth effects. Swipe to slide and merge tiles, or swipe the background to rotate the cube and work the other sides. Tiles have a value that doubles when they merge, and each merge adds to your score. Play long enough and quantum effects begin to appear: some tiles are in superposition, alternating between two values, some entangled and move together, and some even teleport. Play together with friends via Game Center Multiplayer: take turns on a shared cube, watch each other's moves in real time, and climb the cooperative leaderboard. Universal purchase with Family sharing: pay once, and play Erwin on iPhone, iPad, and Mac, with up to six family members. Erwin respects your privacy and your wallet. This is an app I wanted for myself without compromise or dark patterns: pay once and it's yours, on all your devices, with no ads, no nagging in-app purchases, no tracking, no profiling.

A drafting sheet, and blocks with grooves cut into them. Lay a route from the feeder to the catcher, then let the ball go and find out whether it works. Laying a route is not the same as finishing one: a climb costs speed and a drop returns some of it, but what you get back from coming down never pays for going up again. Height is spent, not borrowed. Corners cost speed too. Nothing is settled until the ball has rolled. WHAT IS IN IT Practice — ten courses on small boards, where the rules are learned. Nothing is ranked. Open League — twenty hand-built courses, free, ranked by the total number of pieces used across the whole set. Fewest wins. Finishing them opens the Pro League. Pro League — twenty courses for people who have already finished twenty. Getting the ball home is assumed here; what is asked is how few pieces it took. Each course knows its own true minimum, so you can always see how far off you are. Drills — pick a theme and a course is built on the spot. One is free each day; Pro removes the limit. Skill Trials — Pro courses where the ball must pass through a fixed checkpoint before reaching the goal. A new course is made each time. Workshop — place the start and the goal yourself and build whatever you like. Once it has actually rolled home, it can be given away with a share code. What arrives is the problem; the answer does not travel with it. After the other person has solved it themselves, they can look at how you did it. NO ACCOUNT, NO PERMISSIONS No sign-up, no camera, no location, and no advertising. To improve the app, we collect anonymous aggregate counts of fixed actions and the app version only — never personal information, device identifiers, course content, or share codes. Generated courses rebuild from seven-character codes; your progress and hand-built courses stay on your device. No course content is uploaded to or stored on our servers. Block'n'Roll Pro is a one-time purchase — not a subscription — that opens Skill Trials and the Workshop, and removes the limit on drills. The Pro League becomes available after all 20 Open League courses are cleared.