CrispSudoku vs Spatial Block

CrispSudoku is a polished, ad-free Sudoku game with real depth — five rule variants, six grid sizes, and a built-in tutor that explains how to solve every board. PLAY YOUR WAY • Five variants: Classic, Jigsaw (irregular regions), Sudoku-X (diagonals), Killer (summed cages) and Thermo (digits climb along each thermometer) • Six grid sizes: 4×4, 6×6, 8×8, 9×9, 10×10 and 12×12 • Four difficulties, from Easy to Expert • A new Daily Challenge every day — the same board for everyone LEARN AS YOU PLAY • "Explain the solve" walks through any board step by step, naming each technique (naked singles, hidden singles, locked candidates, X-wing and more) • "Next logical step" hints tell you what to play next, and why • Every puzzle gets an honest difficulty rating based on the hardest technique it actually requires THOUGHTFUL TOUCHES • Pencil-mark notes, unlimited undo, and live conflict highlighting • A mistake limit that scales with difficulty • Per-difficulty hint budgets, so hints stay meaningful • Beautiful themes you unlock as you play • Achievements, streaks and detailed statistics PRIVATE BY DESIGN • 100% offline — no account, no ads, no tracking, no data collection • Every puzzle is guaranteed to have exactly one solution CrispSudoku is free software, open source under the GNU AGPL-3.0.

Challenge your spatial mind with Spatial Block, the ultimate 3D logic puzzle! Rotate and guide falling blocks in a 3D grid cage to clear complete layers. Combining classic block puzzle mechanics with a full 3D spatial experience, it offers both relaxation and a serious brain workout. [ How to Play & Controls ] Playing in 3D is simple and intuitive: Move Block: Swipe in the direction you want the block to slide (Left, Right, Forward, or Backward). Rotate Block: Tap anywhere on the screen to rotate the block horizontally on its Y-axis. Vertical Rotate: Tap the "ROT X" button to rotate the block vertically on its X-axis. 3D Camera & Inspection: Drag or swipe with two fingers to freely rotate the 3D grid cage and view from any angle—including directly from underneath—with seamless auto-snap back to the front. Keep Block: Tap the "KEEP" button to store a block and swap it later. Drop Block (Hard & Soft Drop): Tap "DROP": Instantly drops the block to the bottom (Hard Drop). In EASY mode, you get a 1.0s grace period to slide or rotate the block upon landing; in NORMAL mode, it instantly locks in place. Hold "DROP": Rapidly lowers the block (Soft Drop), allowing smooth positioning and landing. Key Features: Immersive 3D Gameplay: Move and rotate blocks along multiple axes in a transparent, beautifully designed 3D grid cage. Dual Difficulty Modes: Choose between EASY (relaxed pace with generous recovery grace) and NORMAL (classic, competitive instant-lock challenge). 360° Free Camera Inspection: View your puzzle from any perspective, including from below, to master every layer. Smooth & Intuitive Controls: Custom-tuned for touchscreens and mobile devices. Local Save & High Scores: Resume your game anytime and track your personal bests across both difficulty modes. Clean & Premium Visuals: Enjoy vibrant colors with soft-edge depth and minimalist design without intrusive ads. Offline Playable: Perfect for playing anytime, anywhere. Download now and test your 3D spatial thinking! (Features a 3-day free trial with a single in-app purchase to unlock unlimited lifetime play.)