Gunpla is the name for Bandai's Gundam plastic model kits: snap-together kits of the mobile suits from the Gundam series. Bandai's English site describes them as plastic models from the Mobile Suit Gundam series, and the oldest kit still on its Japanese list is a 1/144 Gundam dated July 1980.
That July 1980 1/144 Gundam is still listed at ¥330 with tax (Bandai's lists, read Oct 11, 2026).
Read Oct 14, 2026. The definition is ours; facts come from the pages above.