Celso Riva (born c. 1974) is an Italian independent video game designer of several critically acclaimed games, including The Goalkeeper, Universal Boxing Manager, Magic Stones, the Heileen and Vera Blanc series, Bionic Heart, and the Loren the Amazon Princess.
At the age of twenty, Riva began his career, designing small-scale games for the Italian market.
He took a seven-year sabbatical until 2003, when he discovered the shareware distribution model and created the sports management video game Universal Soccer Manager using BlitzBasic.
For the games Summer Session and Heileen, he moved away from C/C++ to embrace Python programming language and in particular the tool Ren'Py.
The stories of The Flower Shop: Summer In Fairbrook and The Flower Shop: Winter in Fairbrook were written by Ayu Sakata from sakevisual.