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So I have been playing this app that has so many high quality graphics with some 3d models and tons of levels and it is only 70mb in size.My app that has only 2 pictures is about 20 mb in size lol..Why?

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closed as off-topic by Alexandre Vaillancourt, DMGregory, Josh Jan 15 '17 at 14:59

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  • \$\begingroup\$ You use Unity, they don't! \$\endgroup\$ – Alexandre Vaillancourt Jan 15 '17 at 2:10
  • \$\begingroup\$ @AlexandreVaillancourt clarify please \$\endgroup\$ – user96402 Jan 15 '17 at 2:12
  • \$\begingroup\$ Possible duplicate of Does the size of the image increases the game's size? \$\endgroup\$ – Alexandre Vaillancourt Jan 15 '17 at 2:12
  • \$\begingroup\$ There may be several reasons for the difference in size. We don't know how they made their game, so we can't answer this question. \$\endgroup\$ – Alexandre Vaillancourt Jan 15 '17 at 2:14
  • \$\begingroup\$ Some of the factors are the tech or middleware used (a full-featured engine will tend to create builds that are larger in filesize than something that uses only a handful of libraries), the size & number of assets used (some games achieve a high-quality look through judicious use of small or re-used assets, rather than splurge on content), compression applied, etc. Unity has some build profiling tools you can use to investigate which parts of your game are responsible for the largest contributions to build size, so that can be a useful starting point. \$\endgroup\$ – DMGregory Jan 15 '17 at 2:47

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