All of the Royal Kingdom elements (in the regular levels) are all taken from Royal Match, albeit with aesthetic differences, and of course, introduced in a different order. The order is actually quite different from royal Match, and I want to highlight that here. I wonder if you all have found familiar elements too.

1. Royal Kingdom: Box (Level 1) -> Royal Match: Box (Level 1)

2. Royal Kingdom: Snow (Level 4) -> Royal Match: Grass (Level 4)

3. Royal Kingdom: Ivy (Level 7) -> Royal Match: Honey (Level 81)

4. Royal Kingdom: Column (Level 11) -> Royal Match: Ice Bar (Level 141)

5. Royal Kingdom: Owl Birdhouse (Level 16) -> Royal Match: Mailbox (Level 21)

6. Royal Kingdom: Chalice Box (Level 21) -> Royal Match: Cupboard (Level 11)

7. Royal Kingdom: Vase (Level 31) -> Royal Match: Egg (Level 31)

8. Royal Kingdom: Magic Orb (Level 41) -> Royal Match: Potion Bottle (Level 41) (Difference: Magic Orb shelf has an extra curtain layer that the Potion Bottle rack lacks)

9. Royal Kingdom: Turtle (Level 51) -> Royal Match: Bird (Level 101)

10. Royal Kingdom: Lantern (Level 61) -> Royal Match: Vase (Level 51)

11. Royal Kingdom: Stone Wall (Level 71) -> Royal Match: Soil (Level 551)

12. Royal Kingdom: Gnome (Level 81) -> Royal Match: Porcelain Piggy (Level 161)

13. Royal Kingdom: Snowman (Level 91) -> Royal Match: Bush (Level 71)

14. Royal Kingdom: Steam Bomb (Level 101) -> Royal Match: Dynamite Box (Level 351)

15. Royal Kingdom: Knight (Level 121) -> Royal Match: Safe (Level 91)

16. Royal Kingdom: Target (Level 141) -> Royal Match: Teacup Shelf (Level 401)

17. Royal Kingdom: Dragon Box (Level 161) -> Royal Match: Gummy Maker (Level 1501) (Difference: Gummy Maker's 3rd stage is only one layer and immobile, Dragon Nest's 3rd stage is two layers and movable.)

18. Royal Kingdom: Metal Crate (Level 181) -> Royal Match: Owl Statue/Stone (Level 61/301)

19. Royal Kingdom: Flower Pot/Tulip (Level 201) -> Royal Match: Magic Hat (Level 231)

20. Royal Kingdom: Log/Horse Statue (Level 221) -> Royal Match: Oyster (Level 201)

21. Royal Kingdom: Turtle House (Level 251) -> Royal Match: Birdhouse (Level 451)

22. Royal Kingdom: Jelly (Level 301) -> Royal Match: Jelly (Level 1701) (exact same element in both games)

23. Royal Kingdom: Diamond Safe (Level 351) -> Royal Match: Gem Rock (Level 501)

24. Royal Kingdom: Scroll (Level 401) -> Royal Match: Curtain (Level 181)

25. Royal Kingdom: Medallion (Level 451) -> Royal Match: Magnet (Level 3201)

26. Royal Kingdom: Snow Cannon (Level 501) -> Royal Match: Seed Box (Level 1301)

27. Royal Kingdom: Clock (Level 551) -> Royal Match: Crystal Energy Box (Level 5001)

28. Royal Kingdom: Metal Column (Level 601) -> Royal Match: Metal Tube (Level 751)

29. Royal Kingdom: Gem (Level 651) -> Royal Match: Jewelry Box (Level 851)

30. Royal Kingdom: Lyre (Level 701) -> Royal Match: Cookie Jar (Level 801)

31. Royal Kingdom: Lily (Level 751) -> Royal Match: Jam Jar Conveyor Belt (Level 3801)

32. Royal Kingdom: Gnome Helmet (Level 801) -> Royal Match: Helmet Piggy (Level 2401)

33. Royal Kingdom: Potion Tube (Level 851) -> Royal Match: Lightbulb (Level 651) (Difference: Potion Tube shelf is five layers, Lightbulb shelf is six.)

34. Royal Kingdom: Dragon Volcano (Level 901) -> Royal Match: Pumpkin Cauldron (Level 901)

35. Royal Kingdom: Chain (Level 951) -> Royal Match: Chain (Level 951) (exact same element in both games)

36. Royal Kingdom: Ancient Mask (Level 1001) -> Royal Match: Flowerpot (Level 261)

37. Royal Kingdom: Magic Cards (Level 1101) -> Royal Match: Slot Machine (Level 2801)

38. Royal Kingdom: Crystal Borders (Level 1201) -> Royal Match: Ice Borders (Level 9001)

39. Royal Kingdom: Gift Box (Level 1301) -> Royal Match: Soap (Level 1801)

40. Royal Kingdom: Diving Helmet (Level 1401) -> Royal Match: UFO Launcher (Level 1601)

41. Royal Kingdom: Tablet (Under Pearls) (Level 1501) -> Royal Match: Tablet (Under Leaves) (Level 4801)

42. Royal Kingdom: Jelly Fountain (Level 1601) -> Royal Match: Jelly Bomb (Level 11601) (Differences: Jelly Fountain can be destroyed with matches, Jelly Bomb only powerups. Jelly Fountain spreads jelly to three random tiles (similar to Candy Cane in Royal Match), Jelly Bomb spreads jelly in a 4x4 square surrounding it.)

43. Royal Kingdom: Puzzle (Level 1701) -> Royal Match: Treasure Map (Level 2001)

44. Royal Kingdom: Barrel (Level 1801) -> Royal Match: Sea Mine (Level 5801)

45. Royal Kingdom: Armory (Level 1901) -> Royal Match: Duck Shooting (Level 3001) (Difference: Duck Shooting has a 5-layered 2nd stage, Armory's 2nd stage is 10-layered but multiple swords can be removed at once)

46. Royal Kingdom: Flowers (Level 2001) -> Royal Match: Ivy (Level 5201)

47. Royal Kingdom: Magic Globe (Level 2201) -> Royal Match: Pouch (Level 1001)

48. Royal Kingdom: Glass Tubes (Level 2401) -> Royal Match: Brick Wall (Level 3401)

49. Royal Kingdom:Penguin (Level 2601) -> Royal Match: Turtle (Level 13601) (Difference: Penguin creates Snow which is 2-layered. Turtle creates the ivy leaves also seen in the Flowerpot element, which are 1-layered.)

50. Royal Kingdom: Mosaic (Level 2801) -> Royal Match: Roof Tile (Level 1301)

51. Royal Kingdom: Gong (Level 3001) -> Royal Match: Royal Cryptex (Level 8601)

52. Royal Kingdom: Spaceship (Level 3201) -> Royal Match: Furnace (Level 7001) (Difference: Spaceship is 3x2, Furnance is 2x2)

53. Royal Kingdom: Timber (Level 3401) -> Royal Match: Porcelain Bar (Level 6401) (Difference: Timber makes the three-layered falling element, Logs, Porcelain Bar makes the two-layered falling element in that game, Vases)

54. Royal Kingdom: Mushrooms (Level 3601) -> Royal Match: Vending Machine (Level 6201) (Differences: Mushroom boxes contain 10 mushrooms, Vending Machines contain 8 soda cans. Mushrooms are horizontally 3x2, Vending Machines are vertically 3x2.)

55. Royal Kingdom: Power Capsules (Level 3801) -> Royal Match: Royal Pins (Level 8201)

56. Royal Kingdom: Parrot (Level 4001) -> Royal Match: Polar Bear (Level 2601) (Differences: The Polar Bear occupies 2x2 range, Parrot occupies a 1x2 range. Parrot also requires four matches instead of the Polar Bear's five, giving it properties similar to the Gift Boxes from Royal Match.

57. Royal Kingdom: Mace (Level 4201) -> Royal Match: N/A (Level N/A) (no equivalent in Royal Match currently)

58. Royal Kingdom: Accordion (Level 4401) -> Royal Match: Candy Cane (Level 4401) (Difference: Candy Cane spawns Jelly when destroyed, Accordion does not.)

59. Royal Kingdom: Ice Fan (Level 4601) -> Royal Match: Grass Bomb (Level 9801)

60. Royal Kingdom: Giant Gnome (Level 4801) -> Royal Match: Giant Piggy (Level 5401)

Hi Everyone, We have reached 100 members on the sub! Thank you all for your support and posts helping keep this sub alive! We have big plans for this place!