2D Tiler vs GtkRadiant

2D Tiler is a free, open-source web editor for 2D game levels, tilesets, pixel assets, palettes, and exports. Its layered map tools include painting, erasing, filling, selection, autotiling, and object placement. Terrain options cover standard, diagonal, sparse, and 16-slot Wang workflows, plus weighted fills. A built-in image editor offers drawing, selection, cropping, moving, and blur tools, among others. Palette imports include GIMP GPL, Adobe ASE, Aseprite, JASC PAL, Paint.NET TXT, and HEX lists.

An AI workspace can create tilesets, sprites, backgrounds, icons, UI elements, and visual effects using OpenAI, Google Gemini, xAI, and Together AI provider families. Provider choice determines availability, billing, content rules, and image privacy. The editor runs locally in the browser and stores project data through a browser-based workflow. Native formats are .2dp projects, .2dm maps, and .2dt tilesets. Map workflows support Tiled, Godot 4, Unity, GameMaker, Defold, Phaser, tIDE, and Mappy formats; raster support includes PNG, JPG, WebP, BMP, and GIF where the selected path allows it. Tiled map and tileset files are supported, but Tiled project-container import and export is planned, not available.

GtkRadiant is a free, open-source level editor and toolchain for games powered by id Tech engines. It includes map compilers, data authoring tools, and Q3Map2, with tools for 3D levels, terrain, and entity placement. The GtkRadiant 1.6 page lists support for games including Quake III Arena, QuakeLive, Urban Terror, Wolfenstein: Enemy Territory, Quake2, Quake2: Remastered, Quetoo, Return to Castle Wolfenstein, Star Trek Voyager: Elite Force, and Jedi Academy. Support for a game can depend on an active developer to test and address issues; some titles may require an older version or third-party fork. GtkRadiant reads and writes assets in a game's directory, and the project recommends installing the game first. It runs on Linux, macOS, and Windows. Linux distribution is through Flathub as a Flatpak; the Mac version requires XQuartz, MacPorts, and other dependencies. Volunteers maintain the GPL-licensed project, which is provided as-is without warranty or support. Listed help options include forums, IRC, tutorial sites, and a GitHub issue tracker.