Stack the Deck! Magic Mahjong

This game was developed with the help of generative AI tools in the following areas.

■ Illustrations and images

2D artwork such as character portraits, backgrounds, cut-in illustrations, character creator parts, achievement icons, and store artwork was produced using image generation AI. The developer designed and directed the composition, character design, colors, and intent, then selected, retouched, cropped, and composited the generated images before including them in the game.

■ Music

The background music was produced using music generation AI. The developer designed the required mood for each scene, generated candidates, then selected and edited the tracks that are included in the game.

■ Voices

The male character voices are existing human-created audio assets (T-Sta), used in accordance with the provider's terms of use. The female character voices were produced using audio generation AI; the developer generated candidates, then selected and edited the clips included in the game.

■ Program code

AI coding assistance tools were used for part of the implementation work.

■ Assets that do not involve AI

All sound effects are existing human-created audio assets (Soundeffect Lab, Kurage Kosho, T-Sta, DOVA-SYNDROME), used in accordance with each provider's terms of use. They are not AI generated. The font is "Zen Kaku Gothic New," provided under the SIL Open Font License.

■ Rights and legal care

All AI-generated assets were reviewed by the developer to ensure they contain no illegal content and do not infringe the rights of third parties. No generation was performed with the intent of imitating any specific real person or existing work.