Credits
Kheldra is built with the work of other people. This page lists every third-party artist, font, library and dataset the game uses, with the licence that applies to each. Thank you to all of them.
Game design and development
Kheldra is designed and developed by the Kheldra team. Original game design, code, text and generated illustrations are the team's own work and need no separate credit line.
Art
These four icon packs are used in the game unmodified or resized as noted. Each pack's licence file ships with its files in the game. Where a licence requires a credit line, the line is given word for word.
| Pack | Author | Source | Licence | Credit line | Changes |
|---|---|---|---|---|---|
| Handpainted RPG icons | LudicArts (ludicarts.com) | https://opengameart.org/content/handpainted-rpg-icons | CC BY 3.0 | Handpainted RPG icons by LudicArts (ludicarts.com/free-rpg-icons), CC BY 3.0 | Files copied unmodified from the 64 px subset. |
| Ravenmore icon pack 2 | Ravenmore (ravenmore.itch.io) | https://opengameart.org/content/fantasy-icon-pack-by-ravenmore-0 | CC BY 3.0 | Icons by Ravenmore (ravenmore.itch.io), CC BY 3.0 | Files copied unmodified from the 64 px subset. |
| Skill, item and spell icons | DustyChest (uploaded to OpenGameArt by pauliuw) | https://opengameart.org/content/skill-item-and-spell-icons | CC0 1.0 Universal (public domain dedication) | Skill, item and spell icons by DustyChest. Credit is not required; it is given as a thank you. | The numbered icons are resized to 128 px. |
| Flare weapon icons 2 | Clint Bellanger (models and renders) and Justin Nichol (painted polish) | https://opengameart.org/content/flare-weapon-icons-2 | CC0 1.0 Universal (public domain dedication) | Weapon icons by Clint Bellanger and Justin Nichol. Credit is not required; it is given as a thank you. | The War Hammer icon is cut out from its black background, trimmed and fitted to 128 px. |
Imported art, not yet used in the game
These packs are stored in the game files for future use and do not appear in the game yet. Each pack folder under assets/third-party holds the licence text and a source note. Where a licence asks for a credit line, the line is given word for word.
| Pack | Author | Licence | Credit line | Used for |
|---|---|---|---|---|
| Lots of free 2d tiles and sprites | Hyptosis; submitted to OpenGameArt by Zabin | CC BY 3.0 | Please credit Hyptosis and Zabin (only drew 6 frames of the bomb's wick burning) from OGA and respect to the License. | Ground, path, tree, town and prop tiles (32 px). Stored for later use. |
| Trees: Mega Pack (16 px sheet) | Compilation by rrexky of work by Hyptosis, Zabin, Curt, Sharm, William.Thompsonj, mold, Daniel Cook, Jetrel, Saphy (TMW), Bertram, DeadlyEssence01, Stephen Challener (Redshrike) and the Open Surge team, Bleed, 2DPIXX, Paul Barden (tiles by Damian Gasinski, aka Gassasin), Yar, Glondo, Sidhi0n and geloescht | CC BY 3.0 | Hyptosis created everything, Zabin organized tiles, and the lamp fixture was created by Curt, Sharm, William.Thompsonj, & mold. Credit goes to Daniel Cook's 2d Circle Graphic Archive, Jetrel's mockups resized 32x32, Bertram's improvements, Zabin's modification and additions, Saphy (TMW) tall grass. Bleed - http://remusprites.carbonmade.com/. You must credit Paul Barden for tiles included in this set, the original main tile author "Damian Gasinski aka Gassasin". Link back to OGA: https://opengameart.org/content/trees-mega-pack-cc-by-30-0 | Trees. Stored for later use. |
| Castle Tiles for RPG's | Zabin, Hyptosis and Daniel Cook | CC BY 3.0 | Zabin, Hyptosis, and Danial Cook. https://opengameart.org/content/castle-tiles-for-rpgs | Castle gates, walls, towers and banners. Stored for later use. |
| Recursive Cave Entrance | makrohn | CC BY 3.0 | Adapted from original by Lanea Zimmerman. | Cave and dungeon entrance. Stored for later use. |
Kheldra's terrain, props, creatures, markers, spell icons and other generated illustrations are original work made for the game. They carry no third-party licence.
Fonts
The game and this site use Grenze Gotisch, in weights 300 (Light), 400 (Regular), 500 (Medium) and 600 (SemiBold). The files are self-hosted and unmodified.
| Font | Copyright | Licence |
|---|---|---|
| Grenze Gotisch, weights 300-600 | Copyright 2019 The Grenze Gotisch Project Authors (github.com/Omnibus-Type/Grenze-Gotisch) | SIL Open Font License, Version 1.1. Read the full licence text (OFL.txt). |
Code and libraries
These open-source libraries are vendored in the game server or the game client. Each one keeps its copyright notice and licence text in the Kheldra source repository.
| Library | Copyright and author | Licence | Upstream source |
|---|---|---|---|
| javascript-astar | Copyright (c) Brian Grinstead | MIT | github.com/bgrins/javascript-astar |
| rot.js: rot-dungeon | Copyright (c) 2012-now(), Ondrej Zara. The random number generator includes the Alea algorithm, Copyright (C) 2010 Johannes Baagøe, under the MIT licence. | BSD-3-Clause | github.com/ondras/rot.js |
| rot.js: rot-vision | Copyright (c) 2012-now(), Ondrej Zara | BSD-3-Clause | github.com/ondras/rot.js |
| wrand | Copyright (c) 2022 Leonardo Montini | MIT | github.com/Balastrong/wrand |
| FastPriorityQueue.js | Needs source confirmation | Apache License 2.0 | github.com/lemire/FastPriorityQueue.js |
| sat-js | Copyright (C) 2012 - 2015 Jim Riecken | MIT | github.com/jriecken/sat-js |
| javascript-state-machine | Copyright (c) 2012-2018 Jake Gordon and contributors | MIT | github.com/jakesgordon/javascript-state-machine |
| toposort | Copyright (c) 2012 Marcel Klehr | MIT | github.com/marcelklehr/toposort |
| fluent-behavior-tree (selector subset) | Copyright (c) 2015 Aaron Scherer | MIT | github.com/cryptiklemur/fluent-behavior-tree |
| simplex-noise | Copyright (c) 2018 Jonas Wagner | MIT | github.com/jwagner/simplex-noise.js |
| potpack | Copyright (c) 2025 Mapbox (package author Vladimir Agafonkin) | ISC | github.com/mapbox/potpack |
| rbush | Copyright (c) 2024 Volodymyr Agafonkin | MIT | github.com/mourner/rbush |
| quickselect (used by rbush) | Copyright (c) 2024 Vladimir Agafonkin | ISC | github.com/mourner/quickselect |
| tinyqueue | Copyright (c) 2017 Vladimir Agafonkin | ISC | github.com/mourner/tinyqueue |
Audio, music and sound effects
Kheldra does not currently use any third-party music or sound effects. The game's sound cues are original.
Data
Kheldra does not currently use any third-party datasets.
Tools
No third-party tools are credited on this page. The art and build scripts used to make the game's illustrations are the team's own.
Report a missing credit
If you spot a missing or wrong credit, or a licence you think should be listed differently, tell us on the Kheldra Discord. Include the name of the work and a link to its source.
Last updated 2026-10-29.