Community hubs like Moposite provide upgrade patches (e.g., 1.1, 1.2 unofficial) for those who already own the registered executable.
The official version 1.04 you are looking for is traditionally part of the of Elasto Mania , though a limited shareware version was originally distributed for free. For the most stable and modern experience, the developers now offer Elasto Mania Remastered on major platforms. Official Download & Purchase Options Elasto Mania Free Download (v1.04)
The original shareware versions (1.0 or 1.1) were freely distributable but contained only a subset of levels. Community hubs like Moposite provide upgrade patches (e
It is also available on the Nintendo eShop for Nintendo Switch, as well as PlayStation and Xbox consoles. Legacy Version Information (v1.04 and others) Elasto Mania Free Download (v1.04)