Side-by-side comparison of two listed Games — real listing data only, no paid placement.
On record, they differ in: unique tags (ct.js 1: #javascript vs Solar2D 2: #lua #indie); category rank (ct.js #23 vs Solar2D not in top 50). Same pricing model (Free) and category (Games). Listing facts only — not a recommendation.
Free 2D game engine based on web technologies with visual tools
ct.js is a free 2D game engine built on web technologies that aims to make learning programming fun and game development easy. It combines visual tools, documentation and a flexible modular library, with several coding language options and localized versions.
Published 2026-08-13 · Links checked 2026-09-06
Lua-based open-source 2D game engine forked from Corona SDK
Solar2D is a Lua-based 2D game engine focused on ease of iteration and usage. It is a fully open-source fork of the widely used Corona SDK, with development led by a former Corona Labs technical lead engineer, plus plugins and a code exchange.
Published 2026-08-13 · Links checked 2026-09-07
| ct.js | Solar2D | |
|---|---|---|
| Pricing | Free | Free |
| Category | Games | Games |
| Rank in Games | Position #23 of 74 | not in top 50 of 74 |
| Alternatives listed | 12 → | 12 → |
| Shared tags | #game-engine #2d #open-source | |
| Unique tags | #javascript | #lua #indie |
| Platforms | Windows | Not detected on official site (checked 2026-09-20) |
| Source code | github.com/ct-js/ct-js | Not detected on official site (checked 2026-09-20) |
| Documentation | docs.ctjs.rocks/ | Not detected on official site (checked 2026-09-20) |
| Official channels | X (Twitter)declared on ctjs.rocks via homepage link with a matching handle | — |
| Official website | ctjs.rocks | solar2d.com |
| Site preview | ||
Rank = neutral rotation by listing ID, not a quality score · how it works
Only platforms with an official store or installer link are listed; others may exist.
ct.js is Free; Solar2D is Free. Both are listed in Games on ToolDock.
What they have in common: #game-engine · #2d · #open-source
ct.js is listed as free; Solar2D is listed as free. Pricing label set at listing time; official pricing page linked where verified — see each official website for current details.
Both are Games listed on ToolDock, and they share the tags game-engine, 2d, open-source.
ToolDock keeps a tag-matched alternatives list for each: see ct.js alternatives and Solar2D alternatives.