Most online casinos do not allow the free bonus to be played on no download slots. These type of slots bonuses are usually exclusive to the download versions and for some specific reasons. The download casino has a lot more casino slots available than in the no download software.
If you compare normally flash casinos have about fifty different games verses the download version having more than three hundred games. Plus you wont find the latest slots within the flash software. Quality of casino slots is simply better within the download software. If your looking for a free bonus with no deposit then flash is not the way to go. If your looking for a purchase bonus then you can collect it on the no download slots casinos. Many of the casinos listed have a option on their website for playing flash casino. Check the promotions page to find out what free bonus you are entitled to. If in doubt you can always contact casino support for more details.