Tiwanaku

Explore ancient lands and uncover hidden resources through pure logic!

Tiwanaku is a free, offline logic puzzle game inspired by the mystery of the Andes. It combines the elegance of Sudoku with a fresh twist — pixel-art biomes waiting to be filled, number by number.

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A Unique Logic Puzzle

Each level is a map of biomes — forests, deserts, mountains, oceans — waiting for you to fill with numbers following two simple rules.

The Rules (Easy to Learn, Hard to Master)

• Every number in a biome is unique. A biome with 5 tiles holds the numbers 1 through 5.
• No two neighboring tiles may share the same value.

That's it. No tutorial marathon, no overwhelming menus. Tap a tile to set a number, and let your brain do the rest.

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Endless Puzzle Generation

Every level is generated on the fly — you will never run out of content. Each puzzle has a guaranteed unique solution, verified by the built-in algorithm. Thousands of hours of gameplay waiting for you.

Fit Every Skill Level

• 5 board sizes: from a relaxing 3×3 grid to brain-bending 9×5 challenges
• 3 difficulty settings: Easy, Medium, and Hard
• 15 combinations for every mood: a quick coffee break or a deep thinking session

Features

• Help mode: reveal possible values for any tile when you're stuck
• Error detection: conflicts are highlighted instantly so you can correct course
• Checkpoint system: fix your progress and return if you want to try a different approach
• Charming pixel-art biomes: desert dunes, lush forests, snowy peaks, ocean shores
• Clean, calming interface — no pop-ups, no timers, no pressure
• Available in English and German
• Runs entirely offline — play anywhere, anytime

Completely Free

No ads. No in-app purchases. No data collection. No paywalls. Ever.

Just a pure puzzle game made with love by a solo developer who believes games should respect your time and attention.

Train Your Brain

Whether you're a Sudoku veteran looking for something new, a puzzle newcomer wanting a gentle challenge, or simply looking for a mindful way to wind down — Tiwanaku is for you. Perfect for commutes, waiting rooms, or that quiet moment before bed.

Download now and start exploring. Your adventure begins with a single number.

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Technical Overview

Tiwanaku is a cross-platform game written in Java on top of the libGDX framework, with launchers for Desktop, Android, and the Web.

Stack

Area	Technology
Language	Java 11
Framework	libGDX 1.14.0 (+ gdx-freetype for font rendering)
Desktop	LWJGL3 backend
Android	libGDX Android backend (minSdk 28, targetSdk 35)
Web (HTML5)	gdx-teavm 1.5.3
Build	Gradle 8.12.0
i18n	Java ResourceBundle (assets/i18n/) — English, German
Rendering	1400 × 800 internal resolution, VSync, 60 FPS target

Project Structure

The project is a standard multi-module libGDX setup:

settler/
├── core/      # Shared game code (rules, generator, UI, rendering)
├── desktop/   # LWJGL3 launcher (Windows / macOS / Linux)
├── android/   # Android launcher + manifest + resources
├── teavm/     # TeaVM launcher for the HTML5 / web build
├── assets/    # Fonts, images, i18n property files (shared by all platforms)
└── docs/      # Published web build (served as static site)

The core module contains the gameplay:

• com.apogames.settler.game.tiwanaku — game state, level sizes, main game loop
• com.apogames.settler.level.algorithmX — puzzle generation / uniqueness solver
• com.apogames.settler.game.menu — menus and navigation
• com.apogames.settler.asset / common / entity — assets, helpers, entities
• com.apogames.settler.backend.io — save / checkpoint persistence

App identifiers:

• Android application ID: com.apogames.tiwanaku
• Java package namespace: com.apogames.settler

Building and Running

Requires a JDK 11+ and, for the Android build, an Android SDK (set via local.properties or ANDROID_HOME).

Desktop

./gradlew desktop:run

Android (install & launch on a connected device)

./gradlew android:installDebug android:run

Web (TeaVM) Build the static site into teavm/build/dist:

./gradlew teavm:build

The TeaVMBuilder main class can also start a local Jetty server (--serve) for development. The currently published web build is in docs/ and can be served directly.

Signing the Android Release

The Android release build is signed via Gradle properties. Provide them in ~/.gradle/gradle.properties or on the command line:

• SETTLER_KEYSTORE_PATH
• SETTLER_KEYSTORE_PASSWORD
• SETTLER_KEY_ALIAS (defaults to settler)
• SETTLER_KEY_PASSWORD

Then run:

./gradlew android:assembleRelease

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License / Author

Made by Dirk Aporius. Source code © 2005–present Dirk Aporius, distributed under a BSD-style license (see the header of Constants.java for the full notice).