# Tower Toppler: reimplementing Nebulus

> Tower Toppler reimplements the rotating-tower puzzle platformer Nebulus with newly drawn graphics. The author reports behavior close to the original after comparison, and the current game uses SDL for graphics and sound. A level editor supports new towers and missions.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-09
- Added to the catalog: 2026-11-09
- Original resource: <https://gitlab.com/roever/toppler>
- Primary source: <https://gitlab.com/roever/toppler/-/blob/c8bf02b0f8bf8875a454758227bf2bfc029487c3/README.md>
- Catalog page: <https://awesomerea.org/resources/tower-toppler-case/>
- Record JSON: <https://awesomerea.org/resources/tower-toppler-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/tower-toppler-case/index.md)

## Requirements & limits

- **Prerequisites:** SDL2, SDL2_mixer and zlib are listed for building the game.
- **Prerequisites:** Rebuilding the data file additionally requires libpng, POV-Ray, GIMP, Blender and ImageMagick.
- **Limits:** The author notes that some sounds could be added and bugs may remain.
- **License:** No licence stated on the project page.

## Primary sources

1. <https://gitlab.com/roever/toppler/-/blob/c8bf02b0f8bf8875a454758227bf2bfc029487c3/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.