The way to do it is with .convert_alpha() Check that your images really do have an alpha channel.
- [pygame] Alpha channels and per pixel alpha Bjorn Samuelsson
- Re: [pygame] Alpha channels and per pixel alpha Ian Mallett
- RE: [pygame] Alpha channels and per pixel alph... Bjorn Samuelsson
- Re: [pygame] Alpha channels and per pixel alpha Brian Fisher
- Re: [pygame] Alpha channels and per pixel alph... Lenard Lindstrom
- RE: [pygame] Alpha channels and per pixel alph... Bjorn Samuelsson
- Re: [pygame] Alpha channels and per pixel ... René Dudfield
- Re: [pygame] Alpha channels and per pi... Lenard Lindstrom
- RE: [pygame] Alpha channels and per pixel alpha Devon Scott-Tunkin