There is a company called Encore Software that's always looking for new games to publish. They recently acquired a company called Viva Media , which publishes value oriented games.
Perhaps you should sell a bundle of all of your casual games, with a bonus of Particle Fire in the retail stores? If you don't think the retail store distribution tactic would work, they also have digital download solutions as well.
Just a suggestion, I don't work for them, but noticed this company is a good company that sells wonderful games that don't break the bank.