HTML5 vs. Flash Online Casinos

Written by: Sadonna Price, OUSC Expert in Online Casinos and Poker
5 minute read
HTML5 vs flash casinos

Players of online casino games rarely think about the system that is operating the game. They just want to play. However, the system is essential for its overall function, be it a slot, blackjack, roulette, or another title. In general, you have Flash online casino games and HTML5 options. For years, Adobe Flash was the go-to system, but later HTML5 was developed to allow games to work better on mobile devices.

HTML5 has now taken precedence over Flash. Players want to play via mobile, and HTML5 makes it easy for operators to offer games on iOS and Android devices. It is important to note that the Adobe Flash Player is ending soon, so players will see games operated in HTML5. Online casinos will be making the switch and adapting to the format.

Why Will Flash No Longer Be Supported?

Flash Adobe

So, when is Adobe Flash going away? The Adobe Flash player became obsolete in December 2020. The format has become redundant, and the main browsers are blocking it to prevent security issues. Adobe has decided to stop updates and support for Flash. This was major news for those who utilize Flash systems.

Real money online casinos must adapt and find a way to offer their games. Sites that provide no-download instant-play options will need to overcome a few obstacles before delivering games to their members. Top operators have already been updating their gaming content, adding HTML5 titles so players can access quality gaming once Flash is gone. However, some sites still lag and have yet to keep up with the impending change. 

Difference Between Flash and HTML5

Learning more about the difference between HTML5 and Flash is important to understand, as many online casinos will have to make changes to provide services. Those who lag may see their sites inoperable as Flash goes away.


flash icon

Flash is proprietary software and was used to create websites via software from Adobe. It could be quite expensive for developers to use and requires specific tools from Adobe for programming. Flash was constantly updated by Adobe but could still cause operating problems for users of older operating systems.

With the introduction of HTML5, Flash quickly became obsolete as the new option was quicker and less expensive to use. A significant downside to Flash was that Apple devices could not use it. This has played a considerable role in HTML5 taking over as the top option. 



HTML5 can do almost everything that Flash can do and better. It does not require a plugin, and Flash cannot keep up with all the aspects that HTML5 can deliver.

Every browser can render HTML5 because it is the default system used by these browsers. HTML5 is also an open format system, so any company can design a new tool that developers can use. The option is simply more convenient and workable than Flash. 

Recap: Flash vs HTML5 Online Casinos

Below we’ve listed the pros and cons for both HTML5 and Flash.


  • Tasks are performed in-browser
  • No add-ons needed
  • Game development is simpler
  • Less time-consuming
  • 3D and 2D graphics can easily be implemented at online casinos
  • HTML5 slots are easy to download and have high-performance value
  • No HTML5 cons for now


  • Allows instant-play online casino gaming.
  • Compatible with most browsers.
  • Testing and bug fixes take a short amount of time.
  • Obsolete since December 2020.
  • Incompatible with mobile devices.
  • Graphics processor slows down PCs, and files with unknown content can be damaging to your device

Top Online Casinos With HTML5

Below we’ve listed our recommended online casinos for HTML5 gameplay. 

1 Red Dog Casino Logo Red Dog Casino BONUS $8,000 Welcome Bonus Play Now
2 DuckyLuck Casino Logo DuckyLuck Casino BONUS 500% up to $7,500 Play Now
3 SlotsandCasino Logo SlotsandCasino BONUS 300% up to $4,500 Play Now
4 Bovada Casino Logo Bovada Casino BONUS 125% up to $3,750 Play Now
5 Wild Casino Logo Wild Casino BONUS 100% up to $5,000 Play Now

Ducky Luck

DuckyLuck Casino Logo Featured Image

Ducky Luck casino offers the best gaming services for players located in the US. The casino has been ahead of the game for a while, offering slots from several developers using HTML5. They also have updated live casino options for mobile users.

You’ll notice great specialty options, bingo, scratch-cards, keno, and top-notch table games. These are HTML5 options compatible with mobile and desktop gaming

DuckyLuck Casino
DuckyLuck Casino
500% up to $7,500


SlotsandCasino Site Features

No longer relying on Flash technology, SlotsandCasino is a top-rated online casino location focusing on HTML5 operation. The site has integrated many games that utilize this format, including slots, table games, and live dealer games.

Easily use your mobile device to access games, playing from home or on the go. SlotsandCasino offers a large selection of casino games and plenty of promotions to help build your bankroll! 

300% up to $4,500

Bovada Casino

bovada feature image

Bovada Casino focuses mainly on slots but also offers a wide variety of casino games. The brand understands the importance of HTML5 and has integrated slot games, table games, and live dealer content.

This site has a great interface and live games that work on mobile or desktop devices. They have a strong reputation in the gambling industry as a top provider and offer trusted services for US players. 

Bovada Casino
Bovada Casino
125% up to $3,750

Choose HTML5 Casinos and Play for Real Money!

As an online casino visitor, it is crucial to note the Flash change and HTML5 integration. Be on the lookout for this update. In the meantime, stick with casinos that are already using HTML5 content rather than Flash. Such sites include BetOnline, Wild Casino, and Join any of these sites to take advantage of a secure gaming environment, top-quality games, and friendly customer support. 

Sadonna Price

Sadonna Price OUSC Expert in Online Casinos and Poker

Sadonna is a former professional poker player. Passionate about writing and loves using her creativity to provide insight into the interesting gambling world.

Learn More About Sadonna