Until Unity directly supports 2D lighting I'm reviewing the asset store options. (Using Unity's 3D lights is often viable but doesn't suit my purposes) My primary needs are performance (running on mobile as efficiently as possible (including garbage collection considerations)) and general asset quality (reliable, flexible, intuitive, updated). It must cast shadows. 2DDL Pro: 2D Dynamic Lights & Shadows. $29. 4-star average from 160 reviews. I own this asset - it's just ok. It has many edge cases where the system wholly or partially fails that despite the fact it meets my project's present needs and setup I'm motivated to look elsewhere. This general feeling is reflected in its reviews. If you're considering using this, try the free version first. Other assets on the store that seem to do a similar job I have not tried? Can anyone comment on the quality and performance on these assets? Especially if they have owned more than, and can give a direct comparison? Zippy Lights 2D. $5 (usually $10) 5-star average from 13 reviews. Claims Optimized for Mobile.. A couple review state this is easiser/better than 'other' assess. Suspect 'other' may be 2DDL. Anyone have experience with this asset? Light 2D. $30. 5-star average from 6 reviews. One review claims "60fps on iPad Air2", but that's pretty high-end mobile, and unsure how stressful the scenario was. Anyone have experience with this asset? SF Soft Shadow 2D. $35. 5-star average from 34 reviews. Claims: very mobile friendly. Anyone have experience with this asset? Light2D. FREE. 4-star average from 41 reviews. Claims: Optimized for mobiles. Anyone have experience with this asset? 2D Light System. Whopping $95. 2-star average but only from 4 reviews. The 1-star review hurting the average doesn't complain about poor functionality or performance, but lack of developer support and flexibility on some specific 2D issues (fair points). Also of concern is last updated in 2014- that alone probably makes this too risky.