What is UnderScript?

UnderScript is a userscript (made with javascript) that gets loaded by a script manager to change the behavior of undercards. These changes range from fixing bugs (removing ghost mines from the board) to adding features (a battle log). There are 84 features and counting for UnderScript, and is fairly popular and completely safe to use. UnderScript will never add anything to harm your computer or account, nor will it ever feature anything considered “hacking” or get you banned.

Why Tampermonkey?

Tampermonkey is a script manager program that loads scripts automatically, and is supported on all major browsers.

Setup

UnderScript is not supported on mobile devices

• Tampermonkey
• UnderScript

Chrome, Edge and Opera

These browsers only let Tampermonkey run userscripts after you allow it, so UnderScript will not load until you do.

• Turn on “Developer mode” with the toggle at the top right of chrome://extensions (edge://extensions in Edge, opera://extensions in Opera)
• On Chrome 138 or newer you can instead right-click the Tampermonkey icon, choose “Manage extension”, and turn on “Allow User Scripts”

Features

1. Remember Class Selection
2. Hotkeys
3. Lower game found volume
4. Battle Log
5. Toastify Game End
6. Deck card preview
7. Automatically sort deck
8. End Turn Restrictions
9. Clear mines from board
10. Card Skin shop layout improvements
11. Dust Counter
12. Right click user chat for context menu
13. Utilize screen space for games list
14. Fix custom games being removed from the lobby
15. Quick open packs
16. Smooth Scrolling deck list
17. Deck Storage
18. Settings Page
19. Undercards settings
20. UnderScript Menu
21. Card draw toasts
22. Better link detection
23. Ping notification toasts
24. Custom Ping Phrases
25. Average Deck Counter
26. Quest Highlight (and toast)
27. Local Reset Time
28. Automatically refresh game list (home page)
29. Friend Request Toast
30. Highlight friends in chat
31. Highlight opponents in chat
32. Quick Deletion
33. Improved Friends Page
34. Change title on found match
35. Skin Toasts
36. Smart Disenchant
37. Persistant Background Music
38. Winstreak Toasts
39. Tag Opponent (@o)
40. Legend rank toasts
41. List online friends
42. Custom Game friend mode
43. April Fools
44. Clear broken hovered cards
45. Chat Commands
46. Disable emotes
47. Disable minigames
48. Streamer mode
49. Leaderboard improvements
50. Craft to max
51. Translation improvements
52. Game found notification
53. Bundle and emote toasts
54. Missing cards in the Deck Hub
55. Ignoring users
56. Icon Helper
57. Translation preview
58. Sticky header
59. Plugin API
60. Chat autocomplete
61. Friendship improvements
62. Page shortcuts
63. Card appearance
64. Quest pass toasts
65. Buy multiple packs
66. Fill deck
67. Prefer shiny on import
68. Random avatar
69. Skip cosmetic purchase confirmation
70. BootstrapDialog Events
71. New card toasts
72. Sound Manager
73. Large Icon mode
74. Missed daily rewards
75. Trusted domains
76. Board background priority
77. Craft and disenchant protection
78. Import a deck from a link
79. Collection filters
80. Chat reconnect
81. Automatic updates
82. UnderScript Localization
83. Community Plugins
84. Plugin settings tabs