diff --git a/src/base_media_base.h b/src/base_media_base.h
--- a/src/base_media_base.h
+++ b/src/base_media_base.h
@@ -15,6 +15,8 @@
 #include "fileio_func.h"
 #include "core/smallmap_type.hpp"
 #include "gfx_type.h"
+#include "textfile_type.h"
+#include "textfile_gui.h"
 
 /* Forward declare these; can't do 'struct X' in functions as older GCCs barf on that */
 struct IniFile;
@@ -143,6 +145,22 @@
 	{
 		return file->CheckMD5(subdir, SIZE_MAX);
 	}
+
+	/**
+	* Search a textfile file next to this base media.
+	* @param type The type of the textfile to search for.
+	* @return The filename for the textfile, \c NULL otherwise.
+	*/
+	const char *GetTextfile(TextfileType type) const
+	{
+		for (uint i = 0; i < NUM_FILES; i++) {
+			const char *textfile = ::GetTextfile(type, BASESET_DIR, this->files[i].filename);
+			if (textfile != NULL) {
+				return textfile;
+			}
+		}
+		return NULL;
+	}
 };
 
 /**
diff --git a/src/settings_gui.cpp b/src/settings_gui.cpp
--- a/src/settings_gui.cpp
+++ b/src/settings_gui.cpp
@@ -34,6 +34,7 @@
 #include "ai/ai.hpp"
 #include "blitter/factory.hpp"
 #include "language.h"
+#include "textfile_gui.h"
 
 
 
@@ -118,6 +119,40 @@
 	return list;
 }
 
+/** Window for displaying the textfile of a BaseSet. */
+template <class TBaseSet>
+struct BaseSetTextfileWindow : public TextfileWindow {
+	const TBaseSet* baseset; ///< View the textfile of this BaseSet.
+
+	BaseSetTextfileWindow(TextfileType file_type, const TBaseSet* baseset) : TextfileWindow(file_type), baseset(baseset)
+	{
+		this->GetWidget<NWidgetCore>(WID_TF_CAPTION)->SetDataTip(STR_TEXTFILE_README_CAPTION + file_type, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS);
+
+		const char *textfile = this->baseset->GetTextfile(file_type);
+		this->LoadTextfile(textfile, BASESET_DIR);
+	}
+
+	/* virtual */ void SetStringParameters(int widget) const
+	{
+		if (widget == WID_TF_CAPTION) {
+			SetDParam(0, STR_CONTENT_TYPE_NEWGRF);
+			SetDParamStr(1, this->baseset->name);
+		}
+	}
+};
+
+/**
+ * Open the BaseSet version of the textfile window.
+ * @param file_type The type of textfile to display.
+ * @param baseset The BaseSet to use.
+ */
+template <class TBaseSet>
+void ShowBaseSetTextfileWindow(TextfileType file_type, const TBaseSet* baseset)
+{
+	DeleteWindowByClass(WC_TEXTFILE);
+	new BaseSetTextfileWindow<TBaseSet>(file_type, baseset);
+}
+
 struct GameOptionsWindow : Window {
 	GameSettings *opt;
 	bool reload;
@@ -395,6 +430,24 @@
 
 	virtual void OnClick(Point pt, int widget, int click_count)
 	{
+		if (widget >= WID_GO_BASE_GRF_TEXTFILE && widget < WID_GO_BASE_GRF_TEXTFILE + TFT_END) {
+			if (BaseGraphics::GetUsedSet() == NULL) return;
+
+			ShowBaseSetTextfileWindow((TextfileType)(widget - WID_GO_BASE_GRF_TEXTFILE), BaseGraphics::GetUsedSet());
+			return;
+		}
+		if (widget >= WID_GO_BASE_SFX_TEXTFILE && widget < WID_GO_BASE_SFX_TEXTFILE + TFT_END) {
+			if (BaseSounds::GetUsedSet() == NULL) return;
+
+			ShowBaseSetTextfileWindow((TextfileType)(widget - WID_GO_BASE_SFX_TEXTFILE), BaseSounds::GetUsedSet());
+			return;
+		}
+		if (widget >= WID_GO_BASE_MUSIC_TEXTFILE && widget < WID_GO_BASE_MUSIC_TEXTFILE + TFT_END) {
+			if (BaseMusic::GetUsedSet() == NULL) return;
+
+			ShowBaseSetTextfileWindow((TextfileType)(widget - WID_GO_BASE_MUSIC_TEXTFILE), BaseMusic::GetUsedSet());
+			return;
+		}
 		switch (widget) {
 			case WID_GO_FULLSCREEN_BUTTON: // Click fullscreen on/off
 				/* try to toggle full-screen on/off */
@@ -517,6 +570,12 @@
 		bool missing_files = BaseGraphics::GetUsedSet()->GetNumMissing() == 0;
 		this->GetWidget<NWidgetCore>(WID_GO_BASE_GRF_STATUS)->SetDataTip(missing_files ? STR_EMPTY : STR_GAME_OPTIONS_BASE_GRF_STATUS, STR_NULL);
 
+		for (TextfileType tft = TFT_BEGIN; tft < TFT_END; tft++) {
+			this->SetWidgetDisabledState(WID_GO_BASE_GRF_TEXTFILE + tft, BaseGraphics::GetUsedSet() == NULL || BaseGraphics::GetUsedSet()->GetTextfile(tft) == NULL);
+			this->SetWidgetDisabledState(WID_GO_BASE_SFX_TEXTFILE + tft, BaseSounds::GetUsedSet() == NULL || BaseSounds::GetUsedSet()->GetTextfile(tft) == NULL);
+			this->SetWidgetDisabledState(WID_GO_BASE_MUSIC_TEXTFILE + tft, BaseMusic::GetUsedSet() == NULL || BaseMusic::GetUsedSet()->GetTextfile(tft) == NULL);
+		}
+
 		missing_files = BaseMusic::GetUsedSet()->GetNumInvalid() == 0;
 		this->GetWidget<NWidgetCore>(WID_GO_BASE_MUSIC_STATUS)->SetDataTip(missing_files ? STR_EMPTY : STR_GAME_OPTIONS_BASE_MUSIC_STATUS, STR_NULL);
 	}
@@ -570,7 +629,12 @@
 				NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_GO_BASE_GRF_DROPDOWN), SetMinimalSize(150, 12), SetDataTip(STR_BLACK_RAW_STRING, STR_GAME_OPTIONS_BASE_GRF_TOOLTIP),
 				NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_GRF_STATUS), SetMinimalSize(150, 12), SetDataTip(STR_EMPTY, STR_NULL), SetFill(1, 0),
 			EndContainer(),
-			NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_GRF_DESCRIPTION), SetMinimalSize(330, 0), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_BASE_GRF_DESCRIPTION_TOOLTIP), SetFill(1, 0), SetPadding(6, 0, 0, 0),
+			NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_GRF_DESCRIPTION), SetMinimalSize(330, 0), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_BASE_GRF_DESCRIPTION_TOOLTIP), SetFill(1, 0), SetPadding(6, 0, 6, 0),
+			NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(7, 0, 7),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_GRF_TEXTFILE + TFT_README), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_README, STR_NULL),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_GRF_TEXTFILE + TFT_CHANGELOG), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_CHANGELOG, STR_NULL),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_GRF_TEXTFILE + TFT_LICENSE), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_LICENCE, STR_NULL),
+			EndContainer(),
 		EndContainer(),
 
 		NWidget(WWT_FRAME, COLOUR_GREY), SetDataTip(STR_GAME_OPTIONS_BASE_SFX, STR_NULL), SetPadding(0, 10, 0, 10),
@@ -578,7 +642,12 @@
 				NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_GO_BASE_SFX_DROPDOWN), SetMinimalSize(150, 12), SetDataTip(STR_BLACK_RAW_STRING, STR_GAME_OPTIONS_BASE_SFX_TOOLTIP),
 				NWidget(NWID_SPACER), SetFill(1, 0),
 			EndContainer(),
-			NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_SFX_DESCRIPTION), SetMinimalSize(330, 0), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_BASE_SFX_DESCRIPTION_TOOLTIP), SetFill(1, 0), SetPadding(6, 0, 0, 0),
+			NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_SFX_DESCRIPTION), SetMinimalSize(330, 0), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_BASE_SFX_DESCRIPTION_TOOLTIP), SetFill(1, 0), SetPadding(6, 0, 6, 0),
+			NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(7, 0, 7),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_SFX_TEXTFILE + TFT_README), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_README, STR_NULL),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_SFX_TEXTFILE + TFT_CHANGELOG), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_CHANGELOG, STR_NULL),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_SFX_TEXTFILE + TFT_LICENSE), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_LICENCE, STR_NULL),
+			EndContainer(),
 		EndContainer(),
 
 		NWidget(WWT_FRAME, COLOUR_GREY), SetDataTip(STR_GAME_OPTIONS_BASE_MUSIC, STR_NULL), SetPadding(0, 10, 0, 10),
@@ -586,7 +655,12 @@
 				NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_GO_BASE_MUSIC_DROPDOWN), SetMinimalSize(150, 12), SetDataTip(STR_BLACK_RAW_STRING, STR_GAME_OPTIONS_BASE_MUSIC_TOOLTIP),
 				NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_MUSIC_STATUS), SetMinimalSize(150, 12), SetDataTip(STR_EMPTY, STR_NULL), SetFill(1, 0),
 			EndContainer(),
-			NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_MUSIC_DESCRIPTION), SetMinimalSize(330, 0), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_BASE_MUSIC_DESCRIPTION_TOOLTIP), SetFill(1, 0), SetPadding(6, 0, 0, 0),
+			NWidget(WWT_TEXT, COLOUR_GREY, WID_GO_BASE_MUSIC_DESCRIPTION), SetMinimalSize(330, 0), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_BASE_MUSIC_DESCRIPTION_TOOLTIP), SetFill(1, 0), SetPadding(6, 0, 6, 0),
+			NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(7, 0, 7),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_MUSIC_TEXTFILE + TFT_README), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_README, STR_NULL),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_MUSIC_TEXTFILE + TFT_CHANGELOG), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_CHANGELOG, STR_NULL),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_GO_BASE_MUSIC_TEXTFILE + TFT_LICENSE), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_LICENCE, STR_NULL),
+			EndContainer(),
 		EndContainer(),
 	EndContainer(),
 };
diff --git a/src/widgets/settings_widget.h b/src/widgets/settings_widget.h
--- a/src/widgets/settings_widget.h
+++ b/src/widgets/settings_widget.h
@@ -26,12 +26,15 @@
 	WID_GO_SCREENSHOT_DROPDOWN,    ///< Select the screenshot type... please use PNG!.
 	WID_GO_BASE_GRF_DROPDOWN,      ///< Use to select a base GRF.
 	WID_GO_BASE_GRF_STATUS,        ///< Info about missing files etc.
-	WID_GO_BASE_GRF_DESCRIPTION,   ///< Description of selected base GRF.
+	WID_GO_BASE_GRF_TEXTFILE,      ///< Open base GRF readme, changelog (+1) or license (+2).
+	WID_GO_BASE_GRF_DESCRIPTION = WID_GO_BASE_GRF_TEXTFILE + TFT_END,     ///< Description of selected base GRF.
 	WID_GO_BASE_SFX_DROPDOWN,      ///< Use to select a base SFX.
-	WID_GO_BASE_SFX_DESCRIPTION,   ///< Description of selected base SFX.
+	WID_GO_BASE_SFX_TEXTFILE,      ///< Open base SFX readme, changelog (+1) or license (+2).
+	WID_GO_BASE_SFX_DESCRIPTION = WID_GO_BASE_SFX_TEXTFILE + TFT_END,     ///< Description of selected base SFX.
 	WID_GO_BASE_MUSIC_DROPDOWN,    ///< Use to select a base music set.
 	WID_GO_BASE_MUSIC_STATUS,      ///< Info about corrupted files etc.
-	WID_GO_BASE_MUSIC_DESCRIPTION, ///< Description of selected base music set.
+	WID_GO_BASE_MUSIC_TEXTFILE,    ///< Open base music readme, changelog (+1) or license (+2).
+	WID_GO_BASE_MUSIC_DESCRIPTION = WID_GO_BASE_MUSIC_TEXTFILE + TFT_END, ///< Description of selected base music set.
 };
 
 /** Widgets of the #GameDifficultyWindow class. */